1. ordinary or unoriginal remarks, ideas, or things that are frequently encountered
Usage: plural form
2. topics or themes that are widely known or discussed
Usage: plural form

Examples

• The speech was filled with commonplaces about hard work and determination.
• His writing avoided tired commonplaces and offered fresh insights.
• The debate descended into political commonplaces rather than substantive discussion.
• She rejected the commonplaces of romantic poetry in favor of bold new imagery.
• The book explores commonplaces of American culture with surprising depth.
• Teachers encouraged students to move beyond commonplaces in their essays.