English to English

noun (n)

• a socially awkward or tactless act(noun.act)

  Synonym:
  faux pas, gaffe, gaucherie, slip
  

  source: wordnet30
• 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.(noun)

  source: webster1913