An expression whose meaning cannot be determined from its context.

Roget 571: obscurity etc. (unintelligibility) 519; involution; hard words; ambiguity etc. 520; unintelligibleness; vagueness etc. 475, inexactness etc. 495; what d'ye call 'em etc. (neologism) 563^†; darkness of meaning.    ... show more

Roget 519: unintelligibility; incomprehensibility, imperspicuity^†; inconceivableness, vagueness etc. adj.; obscurity; ambiguity etc. 520; doubtful meaning; uncertainty etc. 475; perplexity etc. (confusion) 59; spinosity^†; obscurum per obscurius [Lat.]; mystification etc. (concealment) 528; latency etc. 526; transcendentalism.    paradox, oxymoron; riddle, enigma, puzzle etc. (secret) 533; diagnus vindice nodus [Lat.]; sealed book; steganography^†, freemasonry.    pons asinorum [Lat.], asses' bridge; high Dutch, Greek, Hebrew; jargon etc. (unmeaning) 517.    ... show more

Roget 475: uncertainty, incertitude, doubt; doubtfulness etc. adj.; dubiety, dubitation^†, dubitancy^†, dubitousness^†.    hesitation, suspense; perplexity, embarrassment, dilemma, bewilderment; timidity etc. (fear) 860; vacillation etc. 605; diaporesis^†, indetermination.    vagueness etc. adj.; haze, fog; obscurity etc. (darkness) 421; ambiguity etc. (double meaning) 520; contingency, dependence, dependency, double contingency, possibility upon a possibility; open question etc. (question) 461; onus probandi [Lat.]; blind bargain, pig in a poke, leap in the dark, something or other; needle in a haystack, needle in a bottle of hay; roving commission.    precariousness etc. adj.; fallibility.    ... show more

Dutch: ambiguïteit, dubbelzinnigheid
Polish: niejasność

Unclearness by virtue of having more than one meaning.

synonym: equivocalness.

Roget 520: equivocalness etc. adj.; double meaning etc. 516; ambiguity, double entente, double entendre [Fr.], pun, paragram^†, calembour^†, quibble, equivoque [Fr.], anagram; conundrum etc. (riddle) 533; play on words, word play etc. (wit) 842; homonym, homonymy [Gramm.]; amphiboly^†, amphibology^†; ambilogy^†, ambiloquy^†.    Sphinx, Delphic oracle.    equivocation etc. (duplicity) 544; white lie, mental reservation etc. (concealment) 528; paltering.    ... show more

Dutch: dubbelzinnigheid
Polish: niejednoznaczność, ambiwalencja, dwuznaczność, ambiwalentność