| Main Entry: | |
| 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: | featureless |
| Part of Speech: | adjective |
| Definition: | nondescript |
| Synonyms: | bland, characterless, faceless, forgettable, nameless, plain, stark, unadorned |
| Main Entry: | ineffable |
| Part of Speech: | adjective |
| Definition: | too great for words |
| Synonyms: | beyond words, celestial, divine, empyreal, empyrean, ethereal, heavenly, holy, ideal, impossible, incommunicable, incredible, indefinable, indescribable, inexpressible, nameless, sacred, spiritual, too sacred for words, transcendent, transcendental, unspeakable, untellable, unutterable |
| Antonyms: | definable, describable, utterable |
| 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: | silent |
| Part of Speech: | adjective |
| Definition: | understood, implied |
| Synonyms: | aphonic, implicit, indescribable, inexpressible, nameless, tacit, unexpressed, unpronounced, unspoken, unuttered, unvoiced, wordless |
| Antonyms: | explicit, tangible |
| Main Entry: | unheard-of |
| Part of Speech: | adjective |
| Definition: | unique, obscure |
| Synonyms: | exceptional, inconceivable, little-known, nameless, new, novel, outlandish, preposterous, rare, shocking, singular, unbelievable, undiscovered, unfamiliar, unknown, unlikely, unprecedented, unrenowned, unsung, unusual |
| Antonyms: | familiar, normal, usual |
| Main Entry: | unidentified |
| Part of Speech: | adjective |
| Definition: | secret |
| Synonyms: | anonymous, mysterious, nameless, not known, pseudonymous, unclassified, unfamiliar, unknown, unmarked, unnamed, unrecognized, unrevealed |
| Antonyms: | identified, known, public |
| Main Entry: | unknown |
| Part of Speech: | adjective |
| Definition: | obscure, mysterious |
| Synonyms: | X, alien, anonymous, concealed, dark, desolate, distant, exotic, far, far-off, faraway, foreign, hidden, humble, incog, incognito, little known, nameless, new, remote, secret, so-and-so, strange, such-and-such, unapprehended, unascertained, uncelebrated, uncharted, undiscovered, undistinguished, unexplained, unexplored, unfamiliar, unheard-of, unidentified, unnamed, unnoted, unperceived, unrecognized, unrenowned, unrevealed, unsung, untold |
| Antonyms: | familiar, identified, known |
| Main Entry: | unspeakable |
| Part of Speech: | adjective |
| Definition: | very bad; beyond description |
| Synonyms: | abominable, alarming, appalling, atrocious, awful, beastly, beyond words, calamitous, detestable, dire, disgusting, dreadful, evil, execrable, fearful, frightening, frightful, heinous, horrible, horrid, incommunicable, inconceivable, indefinable, indescribable, ineffable, inexpressible, inhuman, loathsome, monstrous, nameless, obnoxious, odious, offensive, outrageous, overwhelming, preternatural, repellent, repugnant, repulsive, revolting, shocking, unbelievable, unimaginable, unutterable |
| Antonyms: | good, nice |