What is another word for "ambiguity"?

Roget's Thesaurus (1911) lists these synonyms for "ambiguity": abuse, accent, anagram, antiphrasis, archaic, archaism, argot, babu, barbarism, black, brogue, broken, byword, call, cant, clinch, coin, coiner, colloquial, colloquialism, confusion, corruption, crabbed, darkness, dialect, dog, double, expression, figure, flash, gibberish, hard, his, idiom, inexactness, informal, involution, involved, jargon, kitchen.