ump Get Printable Handwriting (ump) 1 syllables Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a person who makes decisions in sports games. Example Sentence The ball hit the bat with an ump. More Example Sentences Everyone watched as the ump made his call. Synonyms referee; official; judge Antonyms silence; quiet Hear It! Say It! Write It! ump Switch to cursive Start Share with your friends: