permeates Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition verb. 1 to pass or diffuse through; penetrate; 2 to spread or be diffused throughout; pervade. Example Sentence The water permeates sand very easily. Synonyms spread throughout; penetrate; seep; soak; spread Antonyms not go near; stay away Hear It! Say It! Write It! permeates Switch to cursive Start Share with your friends: