Solecism1. (n.) An inconsistency absurdity, or impropriety, especially a nonstandard grammatical usage; an impropriety or incongruity of language in the combination of words or parts of a sentence; esp., deviation from the idiom of a language or from the rules of syntax.
2. (n.) Any inconsistency, unfitness, absurdity, or impropriety, as in deeds or manners.
Thesaurus Entries
Irish bull, anachronism, anacoluthon, antiphrasis, argument, argument by analogy, argumentum ad baculum, argumentum ad captandum, argumentum ad hominem, bad case, barbarism, begging the question, bloomer, blooper, blunder, boner, boo-boo, boob, botch, breach, break, bull, bungle, catachresis, circular argument, claptrap, corruption, crowd-pleasing argument, empty words, error, fallacy, fault, faux pas, flub, fluff, folk etymology, formal fallacy, fumble, gaffe, gaucherie, grammatical error, hypercorrection, hyperform, hysteron proteron, impropriety, incongruity, inconsistency, indecorum, indiscretion, infelicity, insincere argument, lapse, logical fallacy, malaprop, malapropism, marrowsky, material fallacy, mere rhetoric, misconstruction, mispronunciation, missaying, mistake, misusage, moonshine, non sequitur, paralogism, petitio principii, philosophism, pseudosyllogism, slip, sophism, sophistry, spoonerism, stupidity, ungrammaticism, verbal fallacy, vernacularism, violation, vulgarism, weak point