Register & Style
Words marked by formal, informal, slang, archaic, dialectal, or literary usage.
2323 words
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Some words in this topic are A2–C2 — part of Pro. A1 words are always free.
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idiosyncrasy
C2
/ˌɪdiəˈsɪŋkɹəsi/
An unusual habit or feature that is typical of one particular person.
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electrochemical
C2
/ˌəˌlɛktroʊˈkɛmɪkəl/
of or involving electrochemistry
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mutineer
C2
/ˌmjuː.tənˈɪr/
a person who takes part in a mutiny, especially a sailor or soldier rebelling collectively against commanding officers
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carapace
C2
/ˈkærəˌpeɪs/
a hard protective shell covering all or part of the back of an animal such as a turtle, crab, or barnacle
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genomic
C2
Relating to a genome, the complete set of genes in an organism.
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copybook
C2
/ˈkɑpiˌbʊk/
historical: a school exercise book containing models of handwriting for a pupil to copy
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high-toned
C2
/ˌhaɪˈtoʊnd/
dated, especially US: belonging to or characteristic of high social rank; aristocratic or refined
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encyclical
C2
/ɛnˈsɪk.lɪ.kəl/
an authoritative pastoral letter issued by the pope and circulated broadly within the Roman Catholic Church
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catarrh
C2
/kəˈtɑr/
inflammation of a mucous membrane, especially in the nose or throat, accompanied by excessive mucus; now chiefly a dated medical term
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subaltern
C2
/sʌbˈɔːl.tɚn/
historical British military usage: a commissioned army officer below the rank of captain, such as a lieutenant
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switchback
C2
/ˈswɪtʃˌbæk/
chiefly British, dated: a roller coaster or amusement ride with steep rises and descents
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cinematograph
C2
/ˌsɪnəməˈtæɡræf/
an early apparatus that recorded and projected motion pictures
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phosphor
C2
/ˈfɑs.fɚ/
a substance that emits light after being excited by radiation or another form of energy, as in fluorescent lamps and display screens
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specie
C2
/ˈspiːʃi/
money in the form of coins, especially gold or silver coins with intrinsic value rather than paper currency
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solus
C2
/ˈsoʊləs/
literary or in stage directions: alone; unaccompanied
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ultramarine
C2
/ˌʌltrəməˈriːn/
a vivid deep-blue pigment originally made by grinding lapis lazuli and now also produced synthetically
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leprous
C2
/ˈlɛprəs/
affected by or relating to leprosy
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comitatus
C2
/ˌkɑmɪˈteɪtəs/
historical: a band of warriors or nobles bound by loyalty to a ruler or military leader
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noway
C2
/ˈnoʊˌweɪ/
in no way or degree; not at all; now chiefly archaic or dialectal
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interdict
C2
/ˈɪntɚdɪkt/
To forbid (an action or thing) by formal or legal sanction.
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ptomaine
C2
/ˈtoʊ.meɪn/
any of several amines, such as putrescine or cadaverine, produced when bacteria decompose animal or plant matter
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brakeman
C2
/ˈbreɪkmən/
historical: a railway worker responsible for operating a train's brakes and assisting with couplings and switching
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rhythmical
C2
/ˈɹɪð.mɪ.kəl/
rhythmic
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deuced
C2
/ˈduː.sɪd/
old-fashioned informal: very or extremely, used for emphasis
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knavish
C2
/ˈneɪ.vɪʃ/
dishonest, deceitful, or unscrupulous
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vanadium
C2
/vəˈneɪ.di.əm/
the chemical element with symbol V and atomic number 23, a silvery transition metal used chiefly to strengthen steel and in several industrial catalysts
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promethean
C2
/prəˈmiːθiən/
daringly creative, inventive, or defiant of accepted limits
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merk
C2
/mɝːk/
a historical Scottish silver coin and unit of account worth thirteen shillings and fourpence Scots
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grandsire
C2
/ˈɡrændsaɪɹ/
a grandfather, especially in old-fashioned or literary language
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straightway
C2
/ˈstreɪtweɪ/
immediately or without delay, now chiefly literary or archaic
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scrofula
C2
/ˈskrɑfjələ/
dated: tuberculosis of the lymph nodes, especially those of the neck; cervical tuberculous lymphadenitis
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slat
C2
/slæt/
informal: a rib of the body, especially in the plural slats
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enunciation
C2
/ɪˌnʌn.siˈeɪ.ʃən/
The act of enunciating, announcing, proclaiming, or making known; open attestation; declaration.
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phrenology
C2
/frəˈnɑːlədʒi/
historical: a discredited system that claimed a person's character and mental faculties could be read from the shape of the skull
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puritanism
C2
/ˈpjʊr.ə.təˌnɪz.əm/
the religious beliefs, practices, and historical movement of the Protestant Puritans
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lubber
C2
/ˈlʌb.ɚ/
dated or insulting: a large, clumsy, lazy, or foolish person
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mesmerism
C2
/ˈmɛzməˌrɪzəm/
historical: a system developed by Franz Mesmer that claimed an invisible force could produce physical or hypnotic effects
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baldhead
C2
/ˈbɔːldˌhɛd/
dated: a person with a bald head
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buckler
C2
/ˈbʌk.lɚ/
historical: a small round shield held in the hand or worn on the arm for parrying blows
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dyspepsia
C2
/dɪsˈpepsiə/
pain, discomfort, bloating, nausea, or heartburn arising from the upper digestive tract; indigestion
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odalisque
C2
/ˈoʊdəlɪsk/
historical: an enslaved female attendant in an Ottoman palace or harem; in Western writing, often inaccurately treated as a concubine
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wiseacre
C2
/ˈwaɪzˌeɪkɚ/
old-fashioned or informal: a person who pretends to be knowledgeable or makes conceitedly clever remarks
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colloquially
C2
/kəˈloʊ.kwi.əli/
In informal, everyday language.
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inst
C2
/ˈɪnstənt/
dated, in correspondence: of the present month, used after a stated date
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womanish
C2
/ˈwʊmənɪʃ/
dated and derogatory, especially of a man: having traits stereotypically associated with women and judged weak or unsuitable
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hoar
C2
/hɔr/
literary: greyish white with age; old and grey-haired or frost-whitened
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presentment
C2
/prɪˈzɛntmənt/
an appearance, representation, or image presented to the mind
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nobble
C2
/ˈnɑː.bəl/
British informal: to bribe, persuade, intimidate, or otherwise secure improper influence over someone
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pyrite
C2
/ˈpaɪraɪt/
a common brass-yellow mineral consisting of iron disulfide, often mistaken for gold
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swash
C2
/swɑːʃ/
the surge or wash of water against a shore, or the sound it makes
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de rigueur
C2
/də rɪˈɡɝː/
required by custom, etiquette, convention, or current fashion
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orang
C2
/ɔˈræŋ/
dated: a shortened form of orangutan, the large arboreal ape native to Borneo and Sumatra
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gree
C2
/ɡriː/
dialectal or archaic: one step in a flight of stairs
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philologist
C2
/fɪˈlɑːlədʒɪst/
a scholar who studies the historical development, structure, and relationships of languages, especially through written texts
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felicitation
C2
/fəˌlɪsəˈteɪʃən/
formal and usually plural: an expression of congratulation, pleasure, or good wishes offered for someone's success or good fortune
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trivet
C2
/ˈtrɪv.ɪt/
a small stand or heat-resistant mat placed under a hot dish or pan to protect a table or work surface
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grizzle
C2
/ˈɡrɪz.əl/
chiefly British, informal and disapproving: to cry fretfully or complain continually
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wherewith
C2
/wɛrˈwɪð/
with which; using the thing just mentioned
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corpuscle
C2
/ˈkɔɹˌpʌsəl/
a blood cell, especially a red or white blood cell; now chiefly used in older or nontechnical language
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millwright
C2
/ˈmɪlˌraɪt/
historical: a craftsperson who designs, builds, or repairs mills and their machinery
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epicure
C2
/ˈɛpɪkjʊr/
a person with refined and discriminating tastes, especially in food and wine
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oculist
C2
/ˈɑkjəlɪst/
dated: a specialist who diagnoses or treats eye disorders or tests vision
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chanticleer
C2
/ˌtʃæntɪˈklɪr/
literary: a rooster, especially one personified in a fable or story
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purloin
C2
/pɚˈlɔɪn/
formal or humorous: to steal or wrongfully take something, often secretly or in breach of trust
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bowstring
C2
/ˈboʊˌstɹɪŋ/
the cord stretched between the ends of an archer's bow and drawn back to shoot an arrow
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blackamoor
C2
/ˈblæk.əˌmɔɹ/
historical and offensive: an obsolete racial label for a Black person, especially one perceived as African or North African; also formerly used for a Black servant
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refract
C2
/rɪˈfrækt/
to make light, sound, or another wave change direction as it passes between media
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cohabit
C2
/koʊˈhæbɪt/
to live together as an intimate couple, especially without being married
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ecclesiastic
C2
/ɪˌkliːziˈæstɪk/
a member of the clergy, especially in a Christian church; formal
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coppice
C2
/ˈkɑː.pɪs/
an area of woodland managed by periodically cutting trees or shrubs near the base so that new shoots provide a recurring supply of wood
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niggard
C2
/ˈnɪɡɚd/
archaic: a person who is extremely unwilling to spend or give; a miser
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marl
C2
/mɑːrl/
a loose earthy deposit made chiefly of clay and calcium carbonate, often containing shell fragments
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cocotte
C2
/kɔˈkɔt/
a small covered casserole or Dutch oven, especially one used to cook and serve an individual portion
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perambulator
C2
/pəˈræmbjəˌleɪtɚ/
a baby carriage; a chiefly British and now dated term for a pram
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woad
C2
/woʊd/
a Eurasian plant, Isatis tinctoria, formerly cultivated as a source of blue dye
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reticule
C2
/ˈrɛtɪˌkjuːl/
historical: a small woman's handbag, often closed with a drawstring
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trireme
C2
/ˈtraɪ.riːm/
an ancient Mediterranean war galley propelled chiefly by oars arranged in three banks on each side
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opine
C2
/oʊˈpaɪn/
To express an opinion; to state as an opinion; to suppose, consider (that).
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unfix
C2
/ʌnˈfɪks/
to loosen, detach, or remove something from a fixed position
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greatcoat
C2
/ˈɡreɪtˌkoʊt/
a long, heavy overcoat worn for warmth, especially as part of a historical military uniform
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imperil
C2
/ɪmˈper.əl/
formal: to put a person, thing, or undertaking at serious risk of harm, loss, or destruction
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promethium
C2
/prəˈmiː.θi.əm/
the radioactive rare-earth chemical element with symbol Pm and atomic number 61, which has no stable isotopes
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ratcatcher
C2
/ˈrætˌkætʃɚ/
a person employed to catch or destroy rats and other vermin
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cutpurse
C2
/ˈkʌtˌpɝs/
historical: a thief who steals purses or valuables from people in public, especially by cutting a purse from its fastening
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glebe
C2
/ɡliːb/
land belonging to a parish church or ecclesiastical benefice and providing income for its clergy
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firkin
C2
/ˈfɝkɪn/
a small wooden cask used especially for butter, ale, or other provisions
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negroid
C2
/ˈniːɡrɔɪd/
dated and offensive: relating to a discredited racial category formerly applied to people of sub-Saharan African ancestry on the basis of supposed physical traits
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barouche
C2
/bəˈruːʃ/
historical: a large four-wheeled horse-drawn carriage with two facing passenger seats, a folding hood over the rear seat, and a raised driver's seat in front
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arcanum
C2
/ɑrˈkeɪnəm/
a secret, mystery, or piece of knowledge known only to initiates or specialists
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moneybag
C2
/ˈmʌniˌbæɡ/
a bag or pouch used to hold or carry money
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flatcar
C2
/ˈflæt.kɑːr/
chiefly North American, a railroad freight car with a flat open deck and no permanent sides or roof, used for containers, vehicles, machinery, and other bulky loads
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bombast
C2
/ˈbɑːmbæst/
pompous, inflated language with little real meaning
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gabelle
C2
/ɡəˈbɛl/
historical: a tax, especially the compulsory salt tax imposed in pre-Revolutionary France
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bushranger
C2
/ˈbʊʃˌreɪn.dʒɚ/
historical Australian usage: an escaped convict or other outlaw who lived in the bush and survived by robbery
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clew
C2
/kluː/
an archaic or literary spelling of clue: a fact or sign that helps solve a problem or find something
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twiddly
C2
/ˈtwɪdəli/
informal: winding, twisting, or intricately shaped
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