Word Formation & Derivatives
Prefixes, suffixes, compounds, inflections, and derived word families.
11746 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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outmoded
C2
/ˌaʊtˈmoʊdəd/
No longer useful or accepted because newer things have replaced it; out of date.
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breastplate
C2
/ˈbrestˌpleɪt/
a piece of armor that protects the chest or front of the torso
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newfangled
C2
/ˌnuˈfæŋ.ɡəld/
of a new kind or fashion, gratuitously new
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epoxy
C2
/ɪˈpɑk.si/
A very strong, hard-setting glue or resin made from two parts mixed together.
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crustacean
C2
/kɹʌsˈteɪʃən/
an arthropod such as a crab, lobster, shrimp, or barnacle, usually with a hard shell
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patchy
C2
/ˈpæt͡ʃi/
Good in some parts but not in others; uneven in quality
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jurisprudence
C2
/ˌdʒʊr.ɪsˈpruː.dəns/
the theory or philosophy of law and the principles by which legal systems interpret and apply it
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irritability
C2
/ˌɪɹɪtəˈbɪlɪti/
a tendency to become annoyed, impatient, or angry easily
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unmoved
C2
/ənˈmuːvd/
Not affected emotionally, or not showing emotion.
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taskmaster
C2
/ˈtæskˌmæstɚ/
a person who imposes hard, continuous, or exacting work on others
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interloper
C2
/ˌɪntɚˈloʊ̯pɚ/
One who interferes, intrudes or gets involved where not welcome, particularly a self-interested intruder.
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opulence
C2
/ˈɒp.jʊl.əns/
Great wealth shown through luxurious and lavish living.
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evangelist
C2
/ɪˈvændʒəlɪst/
a Christian preacher who seeks to convert others or revive religious faith
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flagging
C2
/ˈflæɡɪŋ/
Becoming weaker, slower, or less lively.
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pageantry
C2
/ˈpædʒ.ən.tri/
elaborate, colorful ceremony and display, especially on a public or royal occasion
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electrostatic
C2
/ɪˌlek.troʊˈstæt.ɪk/
relating to stationary electric charges, the fields and forces they produce, or devices that use those forces
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unimaginative
C2
/ənɪˈmæˌdʒɪnətɪv/
Not imaginative.
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barbarity
C2
/bɑːrˈber.ə.ti/
extreme cruelty or brutal, inhuman behavior
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liniment
C2
/ˈlɪn.ə.mənt/
a medicinal liquid or lotion rubbed on the skin to ease pain or stiffness
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plover
C2
/ˈplʌvɚ/
a compact shorebird with a short bill, pointed wings, and a habit of running along open ground or water margins
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bigamist
C2
/ˈbɪɡ.ə.mɪst/
a person who marries someone while still legally married to another person
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moorish
C2
/ˈmʊrɪʃ/
lowercase, literary: resembling or characteristic of moorland; boggy or marshy
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scraper
C2
/ˈskreɪpɚ/
a tool, blade, or implement used to remove material by scraping
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summarily
C2
/səˈmɛɹɪli/
Suddenly and without ceremony or proper discussion.
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sextant
C2
/ˈsɛk.stənt/
A navigational device for deriving angular distances between objects so as to determine latitude and longitude.
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guardsman
C2
/ˈɡɑrdzmən/
a soldier who belongs to a guard unit, especially an elite or ceremonial one
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freemasonry
C2
/ˈfriˌmeɪsənri/
the organization, beliefs, and ceremonies of the Freemasons
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telescopic
C2
/ˌtɛləˈskɔpɪk/
Made of parts that slide into one another so the whole can be made longer or shorter.
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embed
C2
/ɪmˈbɛd/
To fix something firmly inside a surrounding material.
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codger
C2
/ˈkɑd͡ʒəɹ/
An amusingly eccentric or grumpy and usually elderly man.
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drover
C2
/ˈdroʊvər/
a person who drives cattle, sheep, or other livestock, especially over a long distance
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inoperative
C2
/ɪnˈɑp(ə)ɹətɪv/
not working or functioning
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soupy
C2
/ˈsuːpi/
having a thick, wet, or fluid consistency like soup
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brevity
C2
/ˈbɹɛvəti/
The quality of expressing something in few words; conciseness.
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vestry
C2
/ˈvɛstɹi/
a room in or attached to a church where clergy put on vestments, sacred objects are kept, or meetings are held
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inordinate
C2
/ɪnˈɔɹd(ə)nət/
Excessive; unreasonable or inappropriate in magnitude.
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unpardonable
C2
/ʌnˈpɑrdənəbəl/
so wrong, offensive, or harmful that it cannot be forgiven or excused
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sapper
C2
/ˈsæpɚ/
a military engineer trained to build or destroy fortifications, bridges, roads, and similar works
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inducement
C2
/ɪnˈdusmənt/
Something that encourages or persuades someone to do something; an incentive.
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correlate
C2
/ˈkɔɹəleɪt/
To have a close connection or relationship with something else, so that they change together.
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indefensible
C2
/ˌɪndɪˈfɛnsəbəl/
impossible to justify with a reasonable argument
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shipmate
C2
/ˈʃɪpˌmeɪt/
a fellow member of a ship's crew or a person traveling on the same ship
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quadratic
C2
/kwɒdˈɹætɪk/
of or relating to the second power
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prehistory
C2
/ˌpriːˈhɪstəri/
the period before written records exist for a society or region
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derision
C2
/dɝˈɪʒən/
Mocking laughter or scorn; the act of making fun of someone or something.
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etching
C2
/ˈɛt͡ʃ.ɪŋ/
The art of cutting a design into a metal plate with acid so prints can be made from it.
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laundress
C2
/ˈlɔːndrəs/
a woman employed to wash and iron clothes; now dated
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narwhal
C2
/ˈnɑːrwəl/
a medium-sized Arctic toothed whale whose male usually bears a long, spirally twisted tusk formed from an upper canine tooth
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myopic
C2
/maɪˈoʊ.pɪk/
affected by myopia; unable to see distant objects clearly without corrective lenses
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gravitate
C2
/ˈɡɹævɪteɪt/
To be drawn toward someone or something, as if pulled by an unseen force.
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confluence
C2
/ˈkɑnˌflu.əns/
a place where things merge or flow together, especially rivers
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unassailable
C2
/ˌʌnəˈseɪləbl̩/
Undeniable, incontestable or incontrovertible.
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raiser
C2
/ˈɹeɪzɚ/
a person or thing that raises, increases, or brings something up
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musky
C2
/ˈmʌski/
Resembling or characteristic of musk, especially in scent.
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disingenuous
C2
/ˌdɪs.ɪnˈd͡ʒɛn.ju.əs/
Not ingenuous; not frank or open.
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androgynous
C2
/ænˈdɹɑd͡ʒ.ən.əs/
Pertaining to a feature or characteristic that is not definitively of either sex.
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irreconcilable
C2
/ˌɪˈrɛkənˌsaɪləbəl/
impossible to reconcile
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dynastic
C2
/daɪˈnæstɪk/
relating to a dynasty or to rule by successive members of one family
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emulsion
C2
/ɪˈmʌl.ʃən/
a dispersion of tiny droplets of one liquid in another liquid with which it does not normally mix
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eccentricity
C2
/ˌɛk.sɛnˈtɹɪs.ɪ.ti/
Strange or unusual behaviour; the quality of being odd.
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romper
C2
/ˈɹɑmpɚ/
A one-piece garment, often worn by young children at play.
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frenetic
C2
/ˈfɹɛ.nɪt.ɪk/
Frenzied and frantic, harried; having extreme enthusiasm or energy.
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ornithologist
C2
/ˌɔɹnɪˈθɑləd͡ʒɪst/
a scientist who studies birds
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triumvirate
C2
/traɪˈʌmvɝət/
a group of three people who share authority or responsibility
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sprightly
C2
/ˈspraɪtli/
full of spirit and vitality
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watercress
C2
/ˈwɔtəɹkɹɛs/
a water-loving plant, especially Nasturtium officinale, whose peppery green leaves are eaten in salads or used as a garnish
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mimicry
C2
/ˈmɪmɪkri/
An act or ability to simulate or effect the appearance, characteristics, or behavior of someone or something else.
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cowshed
C2
/ˈkaʊˌʃɛd/
a farm building in which cows are kept
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caraway
C2
/ˈkærəˌweɪ/
the aromatic, crescent-shaped dried fruit commonly called a seed and used as a spice
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inimitable
C2
/ɪnˈɪmɪtəbl̩/
Beyond imitation, surpassing all others; matchless.
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masher
C2
/ˈmæʃər/
a utensil or machine used to crush food or another material into a soft mass
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untainted
C2
/ʌnˈteɪntɪd/
not contaminated, adulterated, or spoiled; pure
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abdication
C2
/ˌæbdəˈkeɪʃən/
the formal act of giving up a throne or other position of sovereign power
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contrive
C2
/kənˈtɹaɪv/
To manage to do something difficult by being clever or resourceful.
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odometer
C2
/oʊˈdɑːmətɚ/
a meter that shows mileage traversed
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cantankerous
C2
/kænˈtæŋkəɹəs/
having a difficult and contrary disposition
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hypnotherapy
C2
/ˌhɪpnoʊˈθɛɹəpi/
The use of hypnosis to treat illness or psychological problems.
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counterintuitive
C2
/ˌkaʊntəɹɪnˈtuɪtɪv/
Contrary to intuition or common sense.
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sedimentary
C2
/ˌsɛd.əˈmɛn.tə.ɹi/
resembling or containing or formed by the accumulation of sediment
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cloudless
C2
/ˈklaʊdləs/
free from clouds
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patten
C2
/ˈpætən/
historical: a wooden clog or raised overshoe worn to keep an ordinary shoe above wet or muddy ground
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aviary
C2
/ˈeɪviˌɛəɹi/
a building where birds are kept
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sandpiper
C2
/ˈsændpaɪpər/
any of numerous small or medium-sized wading birds of the family Scolopacidae, typically with a slender bill and a piping call
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connotation
C2
/ˌkɑnəˈteɪʃən/
A feeling or idea that a word suggests, beyond its literal meaning.
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escarpment
C2
/ɪˈskɑrpmənt/
a long, steep slope or cliff separating two areas of relatively level ground
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lory
C2
/ˈlɔːri/
any of several small, brightly colored Australasian parrots with brush-tipped tongues adapted for feeding on nectar and soft fruit
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smattering
C2
/ˈsmætɚɪŋ/
A small, scattered amount or number of something.
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schism
C2
/ˈskɪzəm/
division of a group into opposing factions
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incredulous
C2
/ˌɪnˈkɹɛ.d͡ʒə.ləs/
Skeptical, disbelieving, or unable to believe.
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assignation
C2
/ˌæsɪɡˈneɪʃən/
often dated: a secret appointment to meet, especially between lovers
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condiment
C2
/ˈkɑn.də.mənt/
a preparation (a sauce or relish or spice) to enhance flavor or enjoyment
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zeitgeist
C2
/ˈtsaɪtˌɡaɪst/
the spirit of the time
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introspection
C2
/ɪntɹəˈspɛkʃən/
A looking inward; specifically, the act or process of self-examination, or inspection of one's own thoughts and feelings; the cognition which the mind has of its own acts and states.
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effrontery
C2
/ɪˈfɹʌntəɹi/
Insolent and shameless audacity.
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liquefy
C2
/ˈlɪ.kwɪ.faɪ/
make (a solid substance) liquid, as by heating
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propitious
C2
/pɹəˈpɪʃəs/
Favorable; advantageous.
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