penetrates Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition verb. goes into or through something. Example Sentence The sunlight penetrates through the window in the morning. More Example Sentences Water penetrates the soil after rain. Synonyms pierces; enters; infiltrates Antonyms withdraws; retreats; leaves Hear It! Say It! Write It! penetrates Switch to cursive Start Share with your friends: