show has 25 distinct synonyms spread across 11 of its 16 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 one recorded opposite is hide.
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.
give an exhibition of to an interested audience
“She shows her dogs frequently”
establish the validity of something, as by an example, explanation or experiment
“The experiment demonstrated the instability of the compound”
finish third or better in a horse or dog race
“he bet $2 on number six to show”
the act of publicly exhibiting or entertaining
“a remarkable show of skill”
something intended to communicate a particular impression
“made a display of strength”
a social event involving a public performance or entertainment
“they wanted to see some of the shows on Broadway”
pretending that something is the case in order to make a good impression
“they try to keep up appearances”
Synonyms, antonyms and the broader and narrower relations for show come from Princeton University’s WordNet. Full sources and licences.