investigates Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition verb. to look into something carefully to learn more. Example Sentence The police officer investigates the neighbor's story. More Example Sentences She investigates the strange noises at night. Synonyms examines; studies; explores Antonyms ignore; avoid Hear It! Say It! Write It! investigates Switch to cursive Start Share with your friends: