Word Study
oxymoron
CIDE DICTIONARY
oxymoron, n. [NL., fr. Gr. , fr. pointedly foolish; 'oxy`s sharp + mwro`s foolish.].
A figure in which an epithet of a contrary signification is added to a word; e. g., cruel kindness; laborious idleness. [1913 Webster]
OXFORD DICTIONARY
oxymoron, n. rhet. a figure of speech in which apparently contradictory terms appear in conjunction (e.g. faith unfaithful kept him falsely true).
Etymology
Gk oxumoron neut. of oxumoros pointedly foolish f. oxus sharp + moros foolish
THESAURUS
oxymoron
Gordian knot, absurdity, ambiguity, ambivalence, antinomy, asymmetry, crux, dilemma, disproportion, disproportionateness, enigma, equivocality, equivocation, heresy, heterodoxy, heterogeneity, hopelessness, impossibility, impossible, impossibleness, incoherence, incommensurability, incompatibility, inconceivability, incongruity, inconsistency, inconsonance, irony, irreconcilability, knot, knotty point, no chance, node, nodus, nonconformability, nonconformity, nonplus, paradox, perplexity, pons asinorum, poser, puzzle, quandary, self-contradiction, teaser, the impossible, unconformability, unconformity, unimaginability, unorthodoxy, unthinkability, vexed question, what cannot be, what cannot happenROGET THESAURUS
oxymoron
Unintelligibility
N unintelligibility, incomprehensibility, imperspicuity, inconceivableness, vagueness, obscurity, ambiguity, doubtful meaning, uncertainty, perplexity, spinosity, obscurum per obscurius, mystification, latency, transcendentalism, paradox, oxymoron, riddle, enigma, puzzle, diagnus vindice nodus, sealed book, steganography, freemasonry, pons asinorum, asses' bridge, high Dutch, Greek, Hebrew, jargon, unintelligible, unaccountable, undecipherable, undiscoverable, unknowable, unfathomable, incognizable, inexplicable, inscrutable, inapprehensible, incomprehensible, insolvable, insoluble, impenetrable, illegible, as Greek to one, unexplained, paradoxical, enigmatic, enigmatical, puzzling (secret), indecipherable, obscure, dark, muddy, clear as mud, seen through a mist, dim, nebulous, shrouded in mystery, opaque, dense, undiscernible, misty, hidden, latent, indefinite, garbled, perplexed, undetermined, vague, loose, ambiguous, mysterious, mystic, mystical, acroamatic, acroamatical, metempirical, transcendental, occult, recondite, abstruse, crabbed, inconceivable, inconceptible, searchless, above comprehension, beyond comprehension, past comprehension, beyond one's depth, unconceived, inexpressible, undefinable, incommunicable, unpredictable, unforeseeable, it's Greek to me.For further exploring for "oxymoron" in Webster Dictionary Online