Testy/ˈtesti/ Definition 1 of 2Pro Tip 1/3Mood Indicator Use 'testy' to describe someone showing impatience or irritation due to discomfort or annoyance. After hours of waiting, her tone became testy. Pro Tip 2/3Emotional State 'Testy' reflects a temporary emotional state, not a personality trait. He's normally calm, but he's testy when tired. Pro Tip 3/3Intensity 'Testy' suggests a mild level of irritability compared to stronger words like 'furious'. She became testy, not furious, during the debate.