fussing Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition verb. 1 worry unnecessarily or excessively; 2 care for like a mother; 3 to complain especially about something relatively unimportant Example Sentence She was fussing because he was two minutes late. Synonyms fret; worry; complain Antonyms praising Hear It! Say It! Write It! fussing Switch to cursive Start Share with your friends: