fold has 20 distinct synonyms spread across 11 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 unfold.
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.
a group of people who adhere to a common faith and habitually attend a given church
a geological process that causes a bend in a stratum of rock
the act of folding
“he gave the napkins a double fold”
incorporate a food ingredient into a mixture by repeatedly turning it over without stirring or beating
“Fold the egg whites into the batter”
cease to operate or cause to cease operating
“The owners decided to move and to close the factory”
Synonyms, antonyms and the broader and narrower relations for fold come from Princeton University’s WordNet. Full sources and licences.