1. most stylish, fashionable, or smart in appearance
Usage: informal
2. most quick-tempered or irritable
Usage: informal
3. most quick or brisk in movement or action
Usage: informal

Examples

• He wore his snappiest suit to the job interview.
• She’s always the snappiest dresser at the office.
• The coach was at his snappiest during the losing streak.
• That’s the snappiest comeback I’ve heard all day.
• The snappiest waiter served our table efficiently.
• Her snappiest response silenced the critics.