go has 68 distinct synonyms spread across 26 of its 35 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. Its 2 recorded opposites are come, no-go.
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.
enter or assume a certain state or condition
“He became annoyed when he heard the bad news”
be abolished or discarded
“These ugly billboards have to go!”
be or continue to be in a certain condition
“The children went hungry that day”
pass from physical life and lose all bodily attributes and functions necessary to sustain life
“She died from cancer”
be ranked or compare
“This violinist is as good as Juilliard-trained violinists go”
be the right size or shape; fit correctly or as desired
“This piece won't fit into the puzzle”
street names for methylenedioxymethamphetamine
a board game for two players who place counters on a grid; the object is to surround and so capture the opponent's counters
functioning correctly and ready for action
“all systems are go”
5 of the 35 recorded senses carry no synonym, antonym or related term, so they are not shown above. Every sense, with its definition and examples, is on the full entry for go.
Synonyms, antonyms and the broader and narrower relations for go come from Princeton University’s WordNet. Full sources and licences.