1. grammatical mistake: a mistake in grammar or syntax
2. error: something incorrect, inappropriate, or inconsistent
3. breach of good manners: an action that breaks the rules of etiquette or good manners
[Mid-16th century. Directly or via French< Latin soloecismus< Greek soloikismos< soloikos "speaking incorrectly," literally "of Soloi" (in ancient Cilicia, E Turkey), whose colonial Attic dialect was considered barbarous]
