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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unanalyzed
C2
/ˌʌnˈænəlaɪzd/
not examined systematically or separated into constituent parts
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deprecatingly
C2
In a way that plays down or apologizes for one's own actions or worth.
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indemonstrable
C2
/ˌɪndɪˈmɑnstrəbəl/
incapable of being demonstrated, proved, or established by an argument
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deprecatory
C2
/ˈdɛpɹɪkəˌtɔɹi/
expressing disapproval or criticism, or seeking to avert criticism by an apologetic manner
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promotive
C2
/prəˈmoʊ.tɪv/
tending to advance, encourage, or contribute to the development of something
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deficiently
C2
/dɪˈfɪʃəntli/
In a way that lacks something needed or falls short of a standard.
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stylographic
C2
/ˌstaɪləˈɡræfɪk/
relating to writing or drawing with a stylus or similar pointed instrument
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prepossess
C2
/ˌpɹiːpəˈzɛs/
to influence someone's opinion in advance, especially favorably
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nescience
C2
/ˈnɛʃəns/
absence of knowledge; ignorance
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inexpediency
C2
/ˌɪn.ɪkˈspiː.di.ən.si/
the quality of being unsuitable, unwise, or unlikely to achieve the intended result
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neologistic
C2
/niˌɑləˈdʒɪstɪk/
relating to, involving, or characterized by newly coined words, phrases, or meanings
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quinquennial
C2
/kwɪnˈkwɛniəl/
occurring once every five years
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seedsman
C2
/ˈsiːdzmən/
a person or business that sells seeds
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declaimer
C2
/dɪˈkleɪmər/
a person who delivers a forceful, theatrical, or rhetorical speech
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coextensive
C2
/ˌkoʊ.ɛkˈstɛn.sɪv/
Having the same spatial limits or boundaries; sharing the same area.
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goatsucker
C2
/ˈɡoʊtˌsʌkɚ/
a dated name for a nightjar, a crepuscular or nocturnal bird of the family Caprimulgidae
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depreciatory
C2
/dɪˈpriːʃiəˌtɔːri/
expressing a low opinion of someone or something; disparaging
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frugivorous
C2
/fruˈdʒɪvərəs/
feeding chiefly or entirely on fruit
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palmate
C2
/ˈpæl.meɪt/
shaped like an open hand, with lobes, leaflets, veins, or other parts radiating from a common point
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appurtenant
C2
/əˈpɜːtɪnənt/
Of or pertaining to an appurtenance.
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quietism
C2
/ˈkwaɪəˌtɪzəm/
a Christian mystical doctrine emphasizing passive contemplation and the surrender of personal will to God
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histrionically
C2
In an overly dramatic or attention-seeking way.
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sonship
C2
/ˈsʌnʃɪp/
the state, status, or relation of being a son
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embower
C2
/ɪmˈbaʊɚ/
to shelter or enclose in or as if in a bower of foliage
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agean
C2
/əˈɡɛn/
dialectal pronunciation spelling of again
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substantialize
C2
/səbˈstænʃəˌlaɪz/
to treat an abstraction, relation, or quality as an independently existing substance or thing
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unwinking
C2
/ʌnˈwɪŋkɪŋ/
not blinking or closing the eyes
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fusibility
C2
/ˌfjuːzəˈbɪləti/
the quality or degree of being capable of melting or being fused by heat
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unmingled
C2
/ʌnˈmɪŋɡəld/
not mixed or combined with anything else; pure or unalloyed
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prohibitory
C2
/proʊˈhɪbəˌtɔɹi/
serving or intended to prohibit or forbid something
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baluster
C2
/ˈbælɪstɚ/
a short upright post that supports the handrail of a staircase, balcony, or terrace
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lighterman
C2
/ˈlaɪtɚmən/
historical: a person who operates, owns, or works on a lighter, a flat-bottomed barge used to transfer cargo
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pudic
C2
/ˈpjudɪk/
modest or easily embarrassed about sexual matters or bodily exposure
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ingathering
C2
/ˈɪnˌɡæðərɪŋ/
the gathering in of a harvest
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unfrequent
C2
/ʌnˈfriːkwənt/
rare or dated: not frequent, common, or often occurring
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septenary
C2
/sɛpˈtɛnəɹi/
consisting of seven parts, arranged in groups of seven, or relating to the number seven
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fordable
C2
/ˈfɔrdəbəl/
shallow, calm, or firm enough to be crossed at a ford on foot, on horseback, or in a vehicle
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infelicity
C2
/ˌɪnfəˈlɪsəti/
an awkward, inappropriate, or ill-chosen expression, action, or detail
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congelation
C2
/ˌkɑːndʒəˈleɪʃən/
the process or result of congealing, especially changing from a liquid to a solid by cooling
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cursitor
C2
/ˈkɝsɪtɚ/
historical English law: a clerk in the Court of Chancery who prepared original writs issued as a matter of routine
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trituration
C2
/ˌtrɪtʃəˈreɪʃən/
the act or process of crushing, rubbing, or grinding a substance into fine particles
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cicatrize
C2
/ˈsɪkəˌtraɪz/
of a wound, to heal through the formation of scar tissue
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natatory
C2
/nəˈteɪ.tə.ɹi/
relating to swimming or adapted for movement through water
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anti-militarist
C2
/ˌæn.tiˈmɪl.ə.tɚ.ɪst/
opposed to militarism, especially to the dominance or political use of powerful armed forces
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orchidaceous
C2
/ˌɔrkɪˈdeɪʃəs/
relating to orchids or the orchid family
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syndicalism
C2
/ˈsɪn.dɪ.kəl.ɪ.zəm/
a revolutionary labor doctrine advocating workers' control of the economy through trade unions and direct action such as a general strike
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unobtrusiveness
C2
The quality of being quiet and not drawing attention to oneself
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taxgatherer
C2
/ˈtæksˌɡæð.ɚ.ɚ/
one who collects taxes or public revenues; a tax collector
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unostentatious
C2
/ˌʌnˌɑː.stənˈteɪ.ʃəs/
not ostentatious
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superannuate
C2
/ˌsuːpɚˈænjueɪt/
to retire someone from service, often with a pension, because of age or infirmity
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quadrate
C2
/ˈkwɑːdreɪt/
to agree, correspond, or fit exactly with something
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honorableness
C2
the quality of deserving honor or respect
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choreographical
C2
Relating to choreography or the arranging of dance movements.
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pedunculate
C2
/pɪˈdʌŋkjələt/
attached to or borne on a peduncle, stalk, or stem
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subsidiarity
C2
/səbˌsɪdiˈæɹɪti/
the principle that decisions and responsibilities should be handled by the lowest or most local level capable of dealing with them effectively
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summarizer
C2
/ˈsʌməˌraɪzɚ/
a person, program, or other thing that condenses material into a summary
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closefisted
C2
/ˌkloʊsˈfɪstɪd/
unwilling to spend, give, or part with money; stingy
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spicery
C2
/ˈspaɪsəri/
spices considered collectively; archaic or literary
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equiangular
C2
/ˌiːkwiˈæŋɡjələr/
having all its angles equal, or having corresponding angles equal
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peltry
C2
/ˈpɛltri/
animal pelts or furs collectively, especially raw, undressed skins traded as a commodity
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anthropocentrism
C2
/ˌænθrəpoʊˈsɛntrɪzəm/
the belief or tendency to treat human beings, human interests, or human values as central or uniquely important
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ineffaceable
C2
/ˌɪn.ɪˈfeɪ.sə.bəl/
impossible to erase, remove, or forget
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jocosity
C2
/dʒoʊˈkɑːsəti/
the quality or practice of merry joking
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winterberry
C2
/ˈwɪntɚˌbɛri/
an eastern North American deciduous holly (Ilex verticillata) bearing persistent bright red berries
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callosity
C2
/kəˈlɑːsəti/
an area of skin or other tissue that has become thick and hard, especially through repeated pressure or friction
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goosander
C2
/ɡuːˈsændər/
the common merganser, Mergus merganser, a large fish-eating diving duck of northern rivers and lakes
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weatherboarding
C2
/ˈwɛðɚˌbɔrdɪŋ/
a building's outer covering of long, usually overlapping boards designed to shed rain
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sophister
C2
/ˈsɑːfɪstɚ/
dated or rare: a person who uses clever but fallacious or misleading arguments; a sophist
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unsoftened
C2
/ʌnˈsɔfənd/
not made physically softer, smoother, or less hard
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rarefy
C2
/ˈɹɛəɹəˌfaɪ/
to make a gas thinner or less dense
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gormandize
C2
/ˈɡɔɹmənˌdaɪz/
dated: to eat greedily or in excessive quantities
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sally port
C2
/ˈsæli ˌpɔːrt/
a small gate or passage in a fortified place through which defenders can make a sortie
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paralyzingly
C2
To a degree that leaves you unable to move or act.
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fuegian
C2
/fjuˈiːdʒiən/
relating to Tierra del Fuego, the archipelago at the southern end of South America
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unallied
C2
/ˌʌnəˈlaɪd/
not joined to another party by a political or military alliance
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metrically
C2
/ˈmɛtrɪkəli/
with regard to meter
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conchological
C2
/ˌkɑŋkəˈlɑdʒɪkəl/
relating to conchology, the scientific study and classification of mollusc shells
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emulous
C2
/ˈɛmjələs/
eager to equal or surpass another; competitively ambitious
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metic
C2
/ˈmɛtɪk/
in an ancient Greek city-state, a resident foreigner who lacked full citizen rights and usually paid a special tax
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hagiographic
C2
/ˈhæɡioʊˌɡɹæfɪk/
Uncritically reverent; adulating.
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acclivity
C2
/əˈklɪvəti/
an upward slope or rising incline, especially on a hill or road
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homiletics
C2
The art of preaching (especially the application of rhetoric in theology).
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subsumption
C2
/səbˈsʌmpʃən/
the act or process of including a particular case, concept, or proposition under a broader category or principle
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Jew's harp
C2
/ˈdʒuːzˌhɑrp/
a small plucked instrument held against the teeth or lips, whose flexible tongue vibrates while the player's mouth changes the tone
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malapropism
C2
/ˈmæləpɹɑpˌɪzəm/
The blundering use of an absurdly inappropriate word or expression in place of a similar-sounding one.
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contravariant
C2
/ˌkɑntrəˈvɛriənt/
transforming in an opposite or reverse way under a change of coordinates or type relation
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quenchable
C2
/ˈkwɛntʃəbəl/
capable of being extinguished or put out
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conation
C2
/koʊˈneɪʃən/
the mental faculty or process of willing, striving, or directing effort toward an action
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catholicity
C2
/ˌkæθəˈlɪsəti/
the quality of being broad, universal, or inclusive in range or sympathies
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fossiliferous
C2
/ˌfɑːsəˈlɪfɝəs/
bearing or containing fossils
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cloddish
C2
/ˈklɑdɪʃ/
awkward, dull, or lacking sensitivity and refinement
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carminative
C2
/kɑː(ɹ)ˈmɪnətɪv/
Relieving the discomfort of gas in the digestive tract, either by reducing its production (by the gut microbiota) or by inducing its expulsion (whether as belches [upper GI action] or as flatus [lower GI action]).
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derivable
C2
/dɪˈɹaɪvəbəɫ/
capable of being derived
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commensurable
C2
/kəˈmɛnʃɚəbəl/
in mathematics, measurable by the same unit without a fractional remainder; having a rational ratio
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perpendicularity
C2
/ˌpɝpənˌdɪkjuˈlɛrəti/
the state or relation of meeting a line or plane at a right angle
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optative
C2
/ˈɑptətɪv/
grammar: expressing a wish, hope, or possibility through a verb form or construction
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