overflows Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition to flow over the top edge of something; to be so full that the contents spill over the top edge; to spill from one space into another; to flood over Example Sentence The river overflows each spring. Synonyms flood; overrun ; excess Antonyms not filled Hear It! Say It! Write It! overflows Switch to cursive Start Share with your friends: