1.SLGa mistake in the use of written or spoken language 语言错误
2RUDE/IMPOLITEsomething that is not considered polite behaviour 失礼，出格
a social solecism
社交上的失礼
Examples from the Corpus
solecism• She commits a lot of solecisms.
Originsolecism
(1500-1600)Latinsoloecismus, from Greek, from soloikos“speaking incorrectly”, from Soloi ancient city in Turkey where an incorrect form of Greek was spoken