Word Formation & Derivatives
Prefixes, suffixes, compounds, inflections, and derived word families.
7226 words
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Some words in this topic are A2–C2 — part of Pro. A1 words are always free.
Go ProC2+ (5170) Pro
integer
C2+
/ˈɪntɪdʒər/
a whole number, positive, negative, or zero
M
S
intensification
C2+
/ɪnˌtɛnsɪfɪˈkeɪʃən/
the act or process of making or becoming more intense
M
S
intension
C2+
/ɪnˈtɛnʃən/
the internal content or connotation of a concept; intensity of effort
M
S
interment
C2+
/ɪnˈtɜrmənt/
the burial of a corpse in a grave or tomb
M
S
interminable
C2+
/ɪnˈtɜrmɪnəbəl/
endless or seemingly without limit, especially tediously so
M
S
intermittently
C2+
/ˌɪntərˈmɪtəntli/
at irregular intervals; occasionally and not continuously
M
S
interpenetrate
C2+
/ˌɪntərˈpɛnɪˌtreɪt/
to penetrate one another thoroughly; to pervade mutually
M
S
interpretive
C2+
/ɪnˈtɜrprɪtɪv/
serving to explain or render the meaning of something
M
S
interrogator
C2+
/ɪnˈtɛrəˌɡeɪtər/
a person who questions someone closely, often in an official inquiry
M
S
intricacy
C2+
/ˈɪntrɪkəsi/
the quality of being complex; a complicated detail
M
S
intrinsicality
C2+
/ɪnˌtrɪnsɪˈkælɪti/
the quality of being intrinsic or essential by nature
M
S
intrusive
C2+
/ɪnˈtrusɪv/
intruding or encroaching where not welcome; obtrusive
M
S
inundation
C2+
/ˌɪnənˈdeɪʃən/
a flood; an overwhelming abundance of something
M
S
inventive
C2+
/ɪnˈvɛntɪv/
having or showing creativity and originality in devising things
M
S
inventory
C2+
/ˈɪnvənˌtɔri/
a complete list of goods or items in stock; the stock itself
M
S
investigative
C2+
/ɪnˈvɛstɪˌɡeɪtɪv/
relating to detailed inquiry or systematic examination
M
S
invigorate
C2+
/ɪnˈvɪɡəˌreɪt/
to give strength, energy, or fresh vitality to
M
S
involution
C2+
/ˌɪnvəˈluʃən/
the state of being intricate; a curling inward or shrinking process
M
S
irresponsibility
C2+
/ˌɪrɪˌspɑnsəˈbɪlɪti/
the quality of acting without proper care or accountability
M
S
irriguous
C2+
/ɪˈrɪɡjuəs/
well-watered; supplying or marked by irrigation (archaic, literary)
M
S
irritant
C2+
/ˈɪrɪtənt/
something that causes irritation or annoyance
M
S
irritative
C2+
/ˈɪrɪˌteɪtɪv/
tending to cause irritation or inflammation
M
S
irruption
C2+
/ɪˈrʌpʃən/
a sudden violent bursting in or invasion
M
S
jeopardy
C2+
/ˈdʒɛpərdi/
danger of loss, harm, or failure; legal risk of conviction
M
S
jobless
C2+
/ˈdʒɑbləs/
without paid employment; unemployed
M
S
jogger
C2+
/ˈdʒɑɡər/
a person who runs at a steady, gentle pace for exercise
M
S
jointly
C2+
/ˈdʒɔɪntli/
together with another or others; in a shared manner
M
S
joker
C2+
/ˈdʒoʊkər/
a person who jokes; a playing card outside the normal suits
M
S
jolly
C2+
/ˈdʒɑli/
cheerful and good-humored; (British) very or extremely
M
S
jovial
C2+
/ˈdʒoʊviəl/
cheerful and good-humored
M
S
jubilant
C2+
/ˈdʒubɪlənt/
feeling or expressing great joy and triumph
M
S
jugglery
C2+
/ˈdʒʌɡləri/
trickery or deception, especially by sleight of hand
M
S
juryman
C2+
/ˈdʒʊrimən/
a male member of a jury
M
S
jurywoman
C2+
/ˈdʒʊriˌwʊmən/
a female member of a jury
M
S
kindred
C2+
/ˈkɪndrəd/
one's family and relations; related or similar in nature
M
S
knavery
C2+
/ˈneɪvəri/
dishonest or deceitful behavior
M
S
knowingness
C2+
/ˈnoʊɪŋnəs/
the quality of seeming to know more than one reveals
M
S
laborious
C2+
/ləˈbɔriəs/
requiring much time and hard effort
M
S
laconic
C2+
/ləˈkɑnɪk/
using very few words; terse to the point of brusqueness
M
S
laden
C2+
/ˈleɪdən/
heavily loaded or weighed down
M
S
latterly
C2+
/ˈlætɚli/
recently; in the latter part of a period
M
S
lavishness
C2+
/ˈlævɪʃnəs/
the quality of being extravagantly abundant or generous
M
S
lawfully
C2+
/ˈlɔfəli/
in a manner permitted or recognized by law
M
S
lawmaking
C2+
/ˈlɔˌmeɪkɪŋ/
the process of enacting laws; legislation
M
S
leaden
C2+
/ˈlɛdən/
heavy, dull, or gray like lead
M
S
leaving
C2+
/ˈlivɪŋ/
the act of departing; (plural) remnants or leftovers
M
S
lection
C2+
/ˈlɛkʃən/
a passage read aloud in worship; a textual variant reading
M
S
leman
C2+
/ˈlɛmən/
a lover or sweetheart, especially an illicit one
M
S
lengthiness
C2+
/ˈlɛŋθinəs/
the quality of being unduly long or protracted
M
S
lesion
C2+
/ˈliʒən/
a region of damaged or abnormal tissue in the body
M
S
lessee
C2+
/lɛˈsi/
a person who holds property under a lease
M
S
licentious
C2+
/laɪˈsɛnʃəs/
lacking moral or sexual restraint
M
S
lickerish
C2+
/ˈlɪkərɪʃ/
greedy, lustful, or eager for sensual pleasure
M
S
lieutenant
C2+
/luˈtɛnənt/
a deputy or a junior commissioned military or police officer
M
S
lightness
C2+
/ˈlaɪtnəs/
the quality of having little weight, or of being bright or carefree
M
S
liken
C2+
/ˈlaɪkən/
to compare one thing to another as similar
M
S
limber
C2+
/ˈlɪmbɚ/
supple and flexible; to make oneself supple
M
S
livable
C2+
/ˈlɪvəbəl/
fit or comfortable to live in or with
M
S
lodging
C2+
/ˈlɑdʒɪŋ/
a temporary place to stay; rented accommodation
M
S
lofty
C2+
/ˈlɔfti/
of great height; noble in sentiment, or haughty
M
S
lolly
C2+
/ˈlɑli/
a piece of candy, especially on a stick; (British slang) money
M
S
loser
C2+
/ˈluzɚ/
a person who loses or who is regarded as a failure
M
S
lowering
C2+
/ˈlaʊərɪŋ/
dark and threatening, as of the sky; scowling
M
S
lowly
C2+
/ˈloʊli/
low in rank or status; humble
M
S
luminous
C2+
/ˈlumɪnəs/
giving off or full of light; radiant
M
S
lunacy
C2+
/ˈlunəsi/
foolish or reckless behavior; insanity
M
S
lusterless
C2+
/ˈlʌstɚləs/
lacking shine or brilliance; dull
M
S
lustful
C2+
/ˈlʌstfəl/
full of strong sexual desire
M
S
luxuriousness
C2+
/lʌɡˈʒʊriəsnəs/
the quality of being richly comfortable and sumptuous
M
S
malediction
C2+
/ˌmælɪˈdɪkʃən/
a curse or the utterance of a curse
M
S
marketer
C2+
/ˈmɑrkɪtɚ/
a person who promotes or sells products or services
M
S
maternity
C2+
/məˈtɜrnɪti/
the state of being a mother; motherhood
M
S
mateship
C2+
/ˈmeɪtʃɪp/
camaraderie and loyalty between friends, especially in Australian usage
M
S
matey
C2+
/ˈmeɪti/
friendly and sociable; (British) a familiar term of address
M
S
mawkish
C2+
/ˈmɔkɪʃ/
excessively sentimental in a feeble or sickly way
M
S
mechanics
C2+
/məˈkænɪks/
the science of motion and forces; the practical workings of something
M
S
medicament
C2+
/məˈdɪkəmənt/
a substance used in medical treatment; a medicine
M
S
medicate
C2+
/ˈmɛdɪˌkeɪt/
to treat with medicine or a drug
M
S
memorious
C2+
/məˈmɔriəs/
having an excellent memory; mindful or remembering
M
S
mercilessness
C2+
/ˈmɜrsɪləsnəs/
the quality of showing no mercy or compassion
M
S
meridional
C2+
/məˈrɪdiənəl/
of the south or a meridian; characteristic of southern peoples
M
S
merrily
C2+
/ˈmɛrɪli/
in a cheerful and lively manner
M
S
metamorphize
C2+
/ˌmɛtəˈmɔrfaɪz/
to transform or change in form; to metamorphose
M
S
meteorologic
C2+
/ˌmitiərəˈlɑdʒɪk/
relating to weather or the study of the atmosphere
M
S
middleman
C2+
/ˈmɪdəlˌmæn/
an intermediary who trades between producer and consumer
M
S
midway
C2+
/ˈmɪdˌweɪ/
halfway; the avenue of amusements at a fair
M
S
mightiness
C2+
/ˈmaɪtinəs/
the quality of being powerful or great
M
S
mimicker
C2+
/ˈmɪmɪkɚ/
a person or thing that imitates another
M
S
minded
C2+
/ˈmaɪndɪd/
inclined or disposed to do something; having a specified attitude
M
S
misanthropic
C2+
/ˌmɪsənˈθrɑpɪk/
disliking or distrusting humankind
M
S
miscellaneous
C2+
/ˌmɪsəˈleɪniəs/
made up of various, unrelated kinds
M
S
misshapen
C2+
/mɪsˈʃeɪpən/
badly or abnormally formed; deformed
M
S
mistakable
C2+
/mɪˈsteɪkəbəl/
liable to be misunderstood or confused with something else
M
S
mixer
C2+
/ˈmɪksɚ/
a device or person that mixes; a social gathering for meeting people
M
S
mockery
C2+
/ˈmɑkəri/
contemptuous ridicule or derision; a thing or person treated as ludicrously inadequate
M
S
moderately
C2+
/ˈmɑdərətli/
to a reasonable or average degree; not extremely
M
S
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