gurgle has 5 distinct synonyms spread across 2 of its 5 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. WordNet records no antonym for it — antonymy is a relation between word forms rather than concepts, so it is deliberately sparse.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
make sounds similar to gurgling water
“The baby gurgled with satisfaction when the mother tickled it”
Synonyms, antonyms and the broader and narrower relations for gurgle come from Princeton University’s WordNet. Full sources and licences.
utter with a gurgling sound
“`Help,' the stabbing victim gurgled”
the bubbling sound of water flowing from a bottle with a narrow neck