run-off Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. the occurrence of surplus liquid as water exceeding the limit or capacity Example Sentence The run-off was causing flooding in the area. Spelled with a hyphen. Synonyms surplus water; overflow; overspill Antonyms drought Hear It! Say It! Write It! run-off Switch to cursive Start Share with your friends: