Synonyms for goop Found 15 synonyms across 2 meanings for “goop”. any thick, viscous matter (noun) sludgeslimegoogookguckgunkmuckooze street names for gamma hydroxybutyrate (noun) soapscoopmax Explore Related Words Rhymes with goopSynonyms for sludgeSynonyms for slimeSynonyms for gooSynonyms for gookSynonyms for guck Synonym Finder | Rhyme Finder | Poetry Editor