hissy fit Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a sudden outburst of anger or frustration Example Sentence She threw a hissy fit when she didn't get her way. Synonyms tantrum; meltdown; rage Antonyms calmness; composure Hear It! Say It! Write It! hissy fit Switch to cursive Start Share with your friends: