GOOP /ɡuːp/ ► audio Scrabble 7 Words With Friends 9 Definition noun any thick, viscous matter. — synonyms: sludge, slime, goo, gook, guck, gunk, muck, ooze noun street names for gamma hydroxybutyrate. — synonyms: soap, scoop, max, liquid_ecstasy, grievous_bodily_harm, Georgia_home_boy, easy_lay See all 4 words you can make from GOOP → 4-letter words Words starting with G Words ending with P ← Unscramble different letters