unfamiliar, adj. 1. unacquainted, unconversant, unversed, unused to, a stranger to; unpracticed, unskilled; ignorant, unenlightened, uninformed, uninitiated; inexperienced, raw, green, unseasoned, wet behind the ears.
2. new, newfangled, novel, original; different, unconventional, unusual, uncommon, unorthodox, unique, out of the ordinary; unaccustomed, uncustomary, unwonted; unknown, unheard-of, unexampled, unparalleled; strange, weird, bizarre,
Sl. freaky, Sl. rum, Sl. far-out; eccentric, offbeat, quizzical, odd, oddish, Sl. oddball, cranky, curious, queer, Inf. funny, Inf. kinky.
3. unexplored, uncharted, uninvestigated. unfashionable, adj. 1. out-of-fashion, out-ofstyle, out, not in, tacky; outworn, timeworn, outmoded, outdated, dated, out-of-date, behind-the-times; obsolete, extinct, dead, defunct, passe, Inf. old-hat, Inf. back-number; obsolescent, on the way out.
2. unorthodox, unconventional, improper, not done, not kosher, Brit, not cricket, Sl. not on.
unfasten, v. detach, free, separate, undo, open, loose, disjoint; set free, part, sever, cut, let go; unlace, untie, unlash, untether, unloose; unhitch, unbutton, unhasp, unfix, unlock, unlatch, unhook, unlink, unzipper; loosen, release, unharness, unshackle, unfetter, unchain, unpinion, unhandcuff; unbar, unpin, unbolt, unbuckle; disengage, cut off, cut adrift, cast off, unmoor.
unfathomable, adj. 1. impenetrable, incomprehensible, past or beyond comprehension, unknowable, inscrutable, incognizable, indecipherable, undecipherable, beyond understanding; profound, deep, esoteric, recondite, abstruse, abstract, heavy, Sl. heavy-duty; mystic, mystical, cabalistic, supernatural; occult, cryptic, perdu, secret, hidden, concealed, shrouded; obscure, vague, dim, dark, nebulous, Rare, imperspicu-ous; mysterious, arcane, inexplicable, unexplainable, insolvable, insoluble, unaccountable, inextricable; puzzling, enigmatic, enigmatical.
2. bottomless, soundless, unsounded, fathomless, unfathomed, plumbless, unplumbed, measureless, unmeasured; abysmal, cavernous, plunging; deepsea, deep as the sea or ocean, deep as a well.
unfavorable, adj. 1. contrary, adverse, antagonistic, hostile, opposing, opposed; antithetical, counter, converse, contradictory; inimical, negatory, discordant, counteracting, conflicting, contrasting.
2. unpropitious, inauspicious, unlucky, unpromising, untoward, ill, bad, foul; ominous, threatening, lowering, gloomy, dark; menacing, portentous, ill-boding, ill-starred, sinister, ill-omened, ill-fated, doomed; infelicitous, untimely, inopportune, cross, unseasonable.
3. unfortunate, unlucky, disadvantageous, unhappy; noxious, inhibitive, discouraging, disserviceable; detrimental, objectionable, discommodious, undesirable; inconvenient, inexpedient, inapt, inadvisable, unwise.
unfeeling, adj. 1. insensible, insensate, numb, sen-sationless, feelingless; senseless, insentient, unperceiving; anesthetized, drugged, sedated, paralyzed, dazed, in shock; dead, unconscious, out, under, lifeless.
2. callous, cold, unsympathetic, hard-hearted, hard; insensitive, thickskinned, unimpressionable, unemotional; casehardened, hardened, hard-boiled, indurate, hard-nosed; uncaring, indifferent, obdurate, impervious, unconcerned; pitiless, merciless, ruthless, adamantine, inhuman, cold-hearted; stiff, tough, stern, harsh, unforgiving; unsparing, unmerciful, uncompas-sionate, untouched; unmoved, unimpressible, stony, flinty, hard-bitten, emotionless.
