superabsorbent Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition adjective. able to soak up a lot of liquid quickly. Example Sentence The diaper is made of superabsorbent material to prevent leaks. Synonyms absorbent; spongy; porous Antonyms repellent; resistant Hear It! Say It! Write It! superabsorbent Switch to cursive Start Share with your friends: