grouch Get Printable Handwriting (grouch) 1 syllables Learn It! Spelling Test Definition noun. a person who is often in a bad mood or who often complains;verb. to complain; grumble. Example Sentence I am a grouch when I am tired. Synonyms crank; grumbler; complain; fuss; grumble; moan Antonyms compliment; praise Share with your friends: