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Synonyms

catching, contagious—more at CONTAGIOUS

infectious mononucleosis noun : an acute infectious disease characterized by fever, swelling of lymph glands, and increased numbers of lymph cells in the blood

in·fe·lic·i·tous adjective : not appropriate in application or expression

— in·fe·lic·i·ty noun

Synonyms

graceless, improper, inapt, incongruous, incorrect, indecorous, inept, unbecoming, unfit, unhappy, unseemly, unsuitable, wrong

in·fer verb in·ferred; in·fer·ring 1 : to derive as a conclusion from facts or premises

2 : GUESS, SURMISE

3 : to lead to as a conclusion or consequence

4 : to convey indirectly and by allusion rather than explicitly : HINT, SUGGEST

Synonyms

[1] conclude, deduce, extrapolate, gather, judge, reason, understand; also conjecture, guess, speculate, surmise; construe, interpret; contemplate, rationalize, think; ascertain, dope (out), find out

[4] allude, hint, imply, indicate, insinuate, intimate, suggest—more at HINT

1inferior adjective 1 : situated lower down

2 : of low or lower degree or rank

3 : of lesser quality

4 : of little or less importance, value, or merit

— in·fe·ri·or·i·ty noun

Synonyms

[2] common, humble, ignoble, low, lowly, mean, plebeian, vulgar—more at IGNOBLE

[3] cheap, cut-rate, junky, lousy, mediocre, shoddy, sleazy, trashy—more at CHEAP

[4] junior, less, lesser, lower, minor, subordinate, under—more at LESSER

[4] mean, minor, second-rate, secondary; also junior, lesser, lower, petty, subordinate, under; average, common, fair, middling, ordinary; amiss, bad, defective, unsatisfactory, wrong; deficient, inadequate, insufficient, unacceptable; littler; jerkwater

Antonyms

superior

2inferior noun : a person or thing inferior to another (as in worth, status, or importance)

Synonyms

junior, subordinate, underling—more at UNDERLING

in·fer·nal adjective 1 : of or relating to hell

2 : HELLISH, FIENDISH <~ schemes>

3 : DAMNABLE

— in·fer·nal·ly adverb

in·fer·no noun, plural -nos [ORIGIN: It, hell, fr. LL infernus, fr. L, lower]

: a place or a state that resembles or suggests hell; also : intense heat

Synonyms

conflagration, fire, holocaust—more at FIRE

in·fer·tile adjective : not fertile or productive : BARREN

— in·fer·til·i·ty noun

Synonyms

barren, impotent, sterile, unproductive—more at STERILE

in·fest verb : to trouble by spreading or swarming in or over; also : to live in or on as a parasite

— in·fes·ta·tion noun

in·fi·del noun 1 : one who is not a Christian or opposes Christianity

2 : an unbeliever esp. with respect to a particular religion

in·fi·del·i·ty noun, plural -ties 1 : lack of belief in a religion

2 : unfaithfulness to a moral obligation : DISLOYALTY

3 : marital unfaithfulness or an instance of it

Synonyms

[2, 3] betrayal, disloyalty, double cross, treachery, treason—more at BETRAYAL

[3] disloyalty, faithlessness, falseness, falsity, inconstancy, perfidy, unfaithfulness; also adultery; betrayal, double-dealing, duplicity, treachery, treason; deceit, deception, lying

Antonyms

allegiance, constancy, devotion, faith, faithfulness, fealty, fidelity, loyalty

in·field noun : the part of a baseball field inside the baselines

— in·field·er noun

in·fight·ing noun 1 : fighting at close quarters

2 : dissension or rivalry among members of a group

in·fil·trate verb -trat·ed; -trat·ing 1 : to enter or filter into or through something

2 : to pass into or through by or as if by filtering or permeating

— in·fil·tra·tion noun

— in·fil·tra·tor noun

Synonyms

insinuate, slip, sneak, work, worm—more at INSINUATE

in·fi·nite adjective 1 : extending indefinitely : LIMITLESS, ENDLESS <~ space> <~ patience>

2 : VAST, IMMENSE; also : INEXHAUSTIBLE <~ wealth>

3 : greater than any preassigned finite value however large <~ number of positive integers>; also : extending to infinity <~ plane surface>

— infinite noun

— in·fi·nite·ly adverb

Synonyms

boundless, endless, illimitable, immeasurable, indefinite, limitless,