| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | hidden, unnoticeable |
| Synonyms: | camouflaged, concealed, dim, faint, hidden, indistinct, insignificant, low-key, low-profile, modest, muted, ordinary, plain, quiet, retiring, secretive, shy, soft-pedalled, subtle, tenuous, unassuming, unemphatic, unobtrusive, unostentatious |
| Antonyms: | conspicuous, exposed, noticeable, open, unhidden |
| Main Entry: | imperceptible |
| Part of Speech: | adjective |
| Definition: | hard to sense; faint |
| Synonyms: | ephemeral, evanescent, fine, gradual, impalpable, imponderable, inappreciable, inaudible, inconsiderable, inconspicuous, indiscernible, indistinct, indistinguishable, infinitesimal, insensible, insignificant, invisible, microscopic, minute, momentary, shadowy, slight, small, subtle, tiny, trivial, undetectable, unnoticeable, vague |
| Antonyms: | apparent, conspicuous, distinct, evident, noticeable, obvious, perceptible, seeable, striking, unobscured |
| Main Entry: | indistinct |
| Part of Speech: | adjective |
| Definition: | obscure, ambiguous |
| Synonyms: | bleared, bleary, blurred, confused, dark, dim, doubtful, faint, fuzzy, hazy, ill-defined, inaudible, inconspicuous, indefinite, indeterminate, indiscernible, indistinguishable, inexact, misty, muffled, murky, out of focus, shadowy, unclear, undefined, undetermined, unheard, unintelligible, vague, weak |
| Antonyms: | apparent, certain, defined, definite, discernible, distinct, evident, explicit, plain, positive, sure |
| Main Entry: | informal |
| Part of Speech: | adjective |
| Definition: | casual, simple |
| Synonyms: | breezy, colloquial, congenial, cool*, democratic, down home, easy, easygoing, everyday, extempore, familiar, folksy, frank, free, free-and-easy, homey, improv, inconspicuous, intimate, laid back, loose, low-pressure, mellow, mixed, motley, natural, off-the-cuff, open, ordinary, relaxed, spontaneous, sporty, straightforward, throwaway, unceremonious, unconstrained, unconventional, unfussy, unofficial, unrestrained, urbane, without ceremony |
| Antonyms: | buttoned-up, ceremonious, dressed-up, formal, official, rigid, stiff |
| Main Entry: | invisible |
| Part of Speech: | adjective |
| Definition: | unable to be seen; hidden |
| Synonyms: | concealed, covert, deceptive, disguised, ethereal, gaseous, ghostly, ideal, impalpable, imperceptible, imponderable, inappreciable, inconspicuous, indiscernible, infinitesimal, insensible, intangible, masked, microscopic, not in sight, obliterated, obscured, occult, out of sight, perdu, screened, supernatural, ulterior, unapparent, undisclosed, ungraspable, unnoticeable, unobservable, unperceivable, unreal, unseeable, unseen, unviewable, vaporous, veiled, wraithlike |
| Antonyms: | detectable, obvious, seen, visible |
| Main Entry: | nameless |
| Part of Speech: | adjective |
| Definition: | unknown, anonymous |
| Synonyms: | X, incognito, inconspicuous, innominate, obscure, pseudonymous, unacknowledged, uncelebrated, undesignated, undistinguished, unfamed, unheard-of, unnamed, unnoted, unsung, untitled, whatchamacallit |
| Antonyms: | designated, distinguished, eminent, famous, known, named, prominent, renowned |
| Main Entry: | obscure |
| Part of Speech: | adjective |
| Definition: | out-of-the-way, little-known |
| Synonyms: | abstruse, arcane, blind, cabalistic, close, covered, cryptic, dark, deep, devious, distant, enigmatic, esoteric, far, far-off, hidden, humble, inaccessible, inconspicuous, inglorious, invisible, irrelevant, lonesome, lowly, minor, mysterious, nameless, odd, oracular, orphic, rare, recondite, remote, removed, reticent, retired, secluded, secret, secretive, seldom seen, sequestered, solitary, undisclosed, undistinguished, unheard-of, unhonored, unimportant, unknown, unnoted, unseen, unsung |
| Antonyms: | distinguished, famous, known |
| Main Entry: | subtle |
| Part of Speech: | adjective |
| Definition: | nice, quiet, delicate |
| Synonyms: | attenuate, attenuated, deep, discriminating, ethereal, exquisite, faint, fine, finespun, hairline, hairsplitting, illusive, implied, inconspicuous, indirect, indistinct, inferred, ingenious, insinuated, mental, penetrating, profound, refined, slight, sophisticated, suggestive, tenuous, thin, understated |
| Antonyms: | hard, harsh, noisy, unsubtle |
| Main Entry: | unnoticed |
| Part of Speech: | adjective |
| Definition: | ignored |
| Synonyms: | disregarded, glossed over, hidden, inconspicuous, neglected, overlooked, passed by, pushed aside, secret, unconsidered, undiscovered, unheeded, unobserved, unobtrusive, unperceived, unrecognized, unremarked, unremembered, unrespected, unseen, winked at |
| Antonyms: | noted, noticed, seen |