1. comparative form of testy; more easily annoyed or impatient

Examples

• He became testier as the day wore on.
• The long wait made her testier than usual.
• My grandfather gets testier when he’s tired.
• The coach was testier during practice after the team’s poor performance.
• She’s always testier in the morning before her coffee.
• The hot weather made everyone testier and more prone to arguments.