turn out has 19 distinct synonyms spread across 7 of its 12 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 turn in.
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.
prove to be in the result or end
“It turns out that he was right”
produce quickly or regularly, usually with machinery
“This factory turns out saws”
come, usually in answer to an invitation or summons
“How many people turned out that evening?”
come and gather for a public event
“Hundreds of thousands turned out for the anti-war rally in New York”
outfit or equip, as with accessories
“The actors were turned out lavishly”
cause to stop operating by disengaging a switch
“Turn off the stereo, please”
Synonyms, antonyms and the broader and narrower relations for turn out come from Princeton University’s WordNet. Full sources and licences.