1. treating serious or difficult subjects with deliberately inappropriate humor; flippant

Examples

• His facetious comment about the accident upset everyone in the room.
• She made a facetious remark about working overtime again.
• The teacher didn’t appreciate his facetious attitude during the serious discussion.
• Don’t be facetious when I’m trying to have a real conversation with you.
• Her facetious tone made it hard to tell if she was being genuine.
• The politician’s facetious response to the crisis angered voters.