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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indefeasible
C2
/ˌɪn.dɪˈfiː.zə.bəl/
especially in law, not capable of being annulled, defeated, or made void
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clasper
C2
/ˈklæspɚ/
a specialized appendage used to hold a mate during reproduction, especially in male fish, insects, or crustaceans
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precociously
C2
In a way that shows unusually early development or maturity.
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drabness
C2
The quality of being dull, colourless, and dreary.
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ineradicable
C2
/ˌɪnɪˈrædɪkəbəl/
impossible or extremely difficult to eliminate, destroy, or remove
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cogently
C2
/ˈkəʊ.dʒn̩t.li/
In a clear and convincing way.
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extensible
C2
/ɪkˈstɛnsəbəl/
capable of being extended, enlarged, or applied more broadly
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reduplication
C2
/rɪˌduːplɪˈkeɪʃən/
a word-formation process in which all or part of a word, root, or syllable is repeated
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métayer
C2
/ˌmɛtəˈjeɪ/
historical: a sharecropper who cultivates a landlord's land for a portion, often half, of the harvest while the landlord supplies stock, seed, or tools
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curacy
C2
/ˈkjʊrəsi/
the office, appointment, or period of service of a curate, including the stipend attached to the post
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taste-maker
C2
A person whose opinions shape what becomes fashionable or popular.
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habituation
C2
/həˌbɪtʃuˈeɪʃən/
the process of forming a habit through repeated action or exposure
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extirpation
C2
/ˌɛkstɚˈpeɪʃən/
the complete destruction or removal of something harmful or unwanted
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presupposition
C2
/ˌpriːsəpəˈzɪʃən/
Something that is assumed to be true without being stated directly.
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excrescence
C2
/ɪkˈskrɛsəns/
an abnormal growth or projection on a living body or natural object
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ponderously
C2
In a slow, heavy, clumsy way.
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incommodious
C2
/ˌɪnkəˈmoʊdiəs/
uncomfortably or inconveniently small
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convolution
C2
/ˌkɑːn.vəˈluː.ʃən/
a twist, coil, or fold, especially one of the folds on the surface of the brain
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thereunder
C2
/ˌðɛɹˈʌndɚ/
under or beneath the thing just mentioned
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scabious
C2
/ˈskeɪ.bi.əs/
a plant with pincushion-like flower heads, especially one of the genera Scabiosa or Knautia
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clangor
C2
/ˈklæŋ(ɡ)ɚ/
a loud, resonant noise or confused series of metallic sounds
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preservationist
C2
/ˌprɛzɝˈveɪʃənɪst/
A person who works to protect historic buildings, natural areas, or endangered species
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effulgence
C2
/ɪˈfʌldʒəns/
brilliant radiance or a dazzling emission of light
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prolixity
C2
/pɹoʊˈlɪksəti/
the quality of using too many words or continuing for a tiresomely long time
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sublunary
C2
/sʌbˈlunəɹi/
literary: belonging to this earthly world rather than to heaven or a spiritual realm
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topographically
C2
With regard to the physical features and shape of the land.
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coastwise
C2
/ˈkoʊstˌwaɪz/
along a coast or by a route following the coast
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improvidence
C2
/ɪmˈpɹɑːvədəns/
failure to plan carefully for the future, especially in the use of money or resources
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compendious
C2
/kəmˈpɛn.di.əs/
concise while still containing the essential information about a subject
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unwonted
C2
/ʌnˈwɑntɪd/
out of the ordinary
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unappeased
C2
/ˌʌn.əˈpiːzd/
not calmed, satisfied, or made less angry
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oligarchical
C2
/ˌɑlɪˈɡɑrkɪkəl/
relating to, controlled by, or characteristic of an oligarchy
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retrospection
C2
The act of looking back and thinking about past events.
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irascibility
C2
/ɪˌræs.əˈbɪl.ə.ti/
a tendency to become angry or irritated quickly
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blenny
C2
/ˈblɛni/
a small, usually elongated marine fish of the blenny groups, especially a bottom-dwelling combtooth blenny of the family Blenniidae
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dietetics
C2
/ˌdaɪəˈtɛtɪks/
the science and professional practice of planning diets in relation to health and disease
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homozygous
C2
/ˌhoʊ.məˈzaɪ.ɡəs/
having two identical alleles at a particular gene locus
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inexpedient
C2
/ˌɪnɪkˈspiːdiənt/
unsuitable or unwise because it is unlikely to achieve the intended result
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auscultation
C2
/ˌɔːskəlˈteɪʃən/
medical examination by listening to sounds within the body, usually with a stethoscope
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rechristen
C2
/ˌriːˈkrɪsən/
to give a new name to a person or thing
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tenantry
C2
/ˈtɛnəntri/
the tenants of an estate, district, or landlord considered collectively
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coadjutor
C2
/ˌkoʊəˈdʒuːtɚ/
a person who works jointly with and assists another; a helper or colleague
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inartistic
C2
Lacking artistic skill or taste.
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decentralize
C2
/diˈsɛntɹəˌlaɪz/
To spread something out from one central place to several different locations.
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branchial
C2
/ˈbɹæŋ.ki.əl/
relating to, resembling, or serving as gills
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recriminate
C2
/ɹɪˈkɹɪmɪneɪt/
to answer an accusation by making a counteraccusation
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demystification
C2
The act of making a confusing or mysterious subject clear and easy to understand.
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lacrimation
C2
/ˌlækrəˈmeɪʃən/
shedding tears
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commensurately
C2
/kəˈmɛnsɝətli/
In a way that matches or is in proportion to something.
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pilaster
C2
/pɪˈlæstɚ/
a shallow rectangular column projecting from a wall, usually with a base and capital and often serving a decorative architectural role
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acceptor
C2
/əkˈsɛptɚ/
a person or institution that accepts a bill of exchange and thereby undertakes to pay it when due
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emulsification
C2
The process of mixing two liquids that normally separate, such as oil and water, into a smooth blend.
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psalmody
C2
/ˈsɑ.mə.di/
the act of singing psalms or hymns
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antinomy
C2
/ænˈtɪn.ə.mi/
a contradiction between two principles or conclusions that each appear reasonable or justified
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doorless
C2
/ˈdɔrləs/
having no door or doors
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carbonize
C2
/ˈkɑɹ.bən.aɪz/
To turn something into carbon by heating it, leaving it scorched or blackened.
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pantheism
C2
/ˈpæn.θi.ɪz.əm/
the doctrine or belief that God is the universe and its phenomena (taken or conceived of as a whole) or the doctrine that regards the universe as a manifestation of God
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polymorphism
C2
/pɑliˈmɔɹfɪzəm/
the occurrence of two or more distinct forms or genetic variants within a population
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truculence
C2
/ˈtrʌk.jə.ləns/
The state of being truculent; eagerness to fight; ferocity.
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armorial
C2
/ɑrˈmɔriəl/
relating to, bearing, or displaying heraldic arms
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metrical
C2
/ˈmɛtɹɪkl̩/
Relating to birth certificates.
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immutability
C2
the quality of being incapable of mutation
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inculcation
C2
/ˌɪnkʌlˈkeɪʃən/
the process of firmly instilling an idea, value, or habit through persistent instruction or repetition
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ascertainable
C2
/ˌæsɚˈteɪnəbl̩/
capable of being ascertained or found out
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venomously
C2
/ˈvɛnəməsli/
With intense spite or hostility.
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arborescent
C2
/ɑɹbəˈɹɛsənt/
resembling a tree in form, growth, or branching structure
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unpracticed
C2
/ʌnˈpræktɪst/
lacking training, experience, or skill gained through practice
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volubility
C2
the quality of being facile in speech and writing
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incongruously
C2
/ˌɪŋˈkɔŋruːəsli/
In a way that seems out of place or does not fit.
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tricolored
C2
/ˌtraɪˈkʌl.ɚd/
having or marked with three different colors
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impassivity
C2
/ˌɪm.pæˈsɪv.ə.ti/
apathy demonstrated by an absence of emotional reactions
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perfectibility
C2
/pɚˌfɛktəˈbɪləti/
the capacity to improve progressively, especially toward moral, intellectual, or social excellence
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sequent
C2
/ˈsiː.kwənt/
in proof theory, a formal expression showing that one or more conclusion formulas follow from a collection of premise formulas
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scunner
C2
/ˈskʌnɚ/
a strong dislike, aversion, or feeling of disgust; chiefly Scottish and northern British
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amatory
C2
/ˈæməˌtɔri/
literary: relating to or expressive of romantic or sexual love
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brachycephalic
C2
/ˌbræki səˈfælɪk/
having a skull that is relatively short from front to back and broad from side to side
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anthropocentric
C2
/ˌænθrəpoʊˈsɛntrɪk/
regarding human beings as the central or most important element of existence, especially when interpreting nature or assigning value
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chimerical
C2
/kɪˈmɛɹɪkəl/
produced by a wildly fanciful imagination
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chiffonier
C2
/ˌʃɪfəˈnɪr/
a tall, narrow chest of drawers or cabinet, sometimes fitted with a mirror
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hygrometer
C2
/haɪˈɡrɑːmətər/
an instrument for measuring humidity, especially the relative humidity of the air
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votary
C2
/ˈvoʊtəri/
a devoted follower, supporter, or practitioner of a cause, leader, or pursuit
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betony
C2
/ˈbɛtəni/
a perennial herb, especially Stachys officinalis, with spikes of purple flowers and a history of medicinal use
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body snatcher
C2
/ˈbɑːdi ˌsnætʃɚ/
historical: a person who illegally removed recently buried corpses from graves, especially to sell them for anatomical dissection
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inferential
C2
/ˌɪnfɝˈɛnʃəl/
based on interpretation
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thraldom
C2
/ˈθrɔːl.dəm/
a state of bondage, servitude, or complete subjection to another power
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disputant
C2
/dɪˈspjuːtənt/
formal: a person who takes part in a dispute, controversy, or debate
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pigweed
C2
/ˈpɪɡˌwiːd/
any of various common weedy plants, especially amaranths or goosefoots, some formerly used as pig fodder or leafy food
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slatternly
C2
Appropriate to or characteristic of a slattern.
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subjectivism
C2
/səbˈdʒɛktəˌvɪzəm/
the doctrine that knowledge, value, or reality depends fundamentally on the experiencing subject
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fatuity
C2
/fəˈtuːəti/
the quality or state of being foolish, especially in a complacent or self-satisfied way
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euphorically
C2
In a way that shows intense happiness and excitement.
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fusible
C2
/ˈfjuːzəbəl/
capable of being melted or fused by heat
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inclemency
C2
/ɪnˈklɛmənsi/
the condition of weather being severe, stormy, or unpleasant
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aphrodisiacal
C2
/ˌæf.roʊ.dɪˈzaɪ.ə.kəl/
exciting sexual desire
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unstamped
C2
Not stamped.
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valetudinarian
C2
/ˌvælətudəˈnɛriən/
a person of weak or sickly health, especially one excessively preoccupied with personal ailments
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