1. a grammatical mistake in speech or writing
Usage: formal
2. a breach of good manners or etiquette
Usage: formal

Examples

• The teacher corrected the solecism in the student’s essay.
• Using ‘me and him’ instead of ‘he and I’ is a common solecism.
• His loud phone conversation during the meeting was a social solecism.
• The diplomat’s casual attire at the formal dinner was considered a solecism.
• She winced at the grammatical solecism in the published article.
• Interrupting the speaker was a serious solecism at the conference.