Noun: Solecism (SAH-luh-sih-zum)
1. An ungrammatical combination of words in a sentence. Also, a minor blunder in speech.
2. Something deviating from the proper, normal, or accepted order.
3. A breach of etiquette or decorum.
Sample sentence: As a copyeditor, Jane has the eyes of a hawk and rarely letting a writer’s solecism slip past her.