testily       
adverb uk/ˈtes.təl.i/ us/ˈtes.təl.i/
 暴躁地,易怒地
in a way that shows you are easily annoyed and not patient
  "No," he snaps testily.  “不,”他暴躁地说。 
 See: testy
 - More examples
 - "If I knew," I replied testily, "I wouldn't be asking."
 - He manhandles the equipment, testily blaming newfangled technology when he has difficulty with basic tasks such as placing a compact disc in a player.
 - He reacted testily to being described as the party's "attack dog" in an interview.
 - “And why would I joke about that?” asked Joanna testily.
 - The Board of Education asks testily how the Health Department knew about the absenteeism, as they certainly didn't report it to anyone.