Roget's Thesaurus of English Words and Phrases by Peter Mark Roget

568. Solecism — N. solecism; bad grammar, false grammar, faulty

grammar; slip of the pen, slip of the tongue; lapsus linguae [Lat.]; slipslop†; bull; barbarism, impropriety. V. use bad grammar, faulty grammar; solecize†, commit a solecism; murder the King's English, murder the Queen's English, break Priscian's head. Adj. ungrammatical; incorrect, inaccurate; faulty; improper, incongruous; solecistic, solecistical†.