1. laughing loudly and uncontrollably
Usage: formal; literary

Examples

• The audience was cachinnating at the comedian’s outrageous jokes.
• She found herself cachinnating despite trying to maintain her composure.
• The children were cachinnating over the silly cartoon characters.
• His cachinnating response to the serious question seemed inappropriate.
• The group was cachinnating so loudly that other diners complained.
• Even the stern professor couldn’t help cachinnating at the student’s witty remark.