1. in an extremely amusing or entertaining way
Usage: informal

Examples

• The comedian’s impression of the politician was killingly funny.
• She told the story in such a killingly witty way that everyone was in tears from laughing.
• His killingly accurate mimicry of their teacher had the whole class giggling.
• The satire was killingly sharp and had the audience roaring with laughter.
• Her killingly dry sense of humor made even the most serious situations amusing.