turn has 36 distinct synonyms spread across 22 of its 38 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.
to send or let go
“They turned away the crowd at the gate of the governor's mansion”
shape by rotating on a lathe or cutting device or a wheel
“turn the legs of the table”
change color
“In Vermont, the leaves turn early”
cause to change or turn into something different;assume new characteristics
“The princess turned the frog into a prince by kissing him”
accomplish by rotating
“turn a somersault”
get by buying and selling
“the company turned a good profit after a year”
cause to move along an axis or into a new direction
“turn your face to the wall”
alter the functioning or setting of
“turn the dial to 10”
direct at someone
“She turned a smile on me”
become officially one year older
“She is turning 50 this year”
the act of changing or reversing the direction of the course
“he took a turn to the right”
Synonyms, antonyms and the broader and narrower relations for turn come from Princeton University’s WordNet. Full sources and licences.
an unforeseen development
“events suddenly took an awkward turn”
the act of turning away or in the opposite direction
“he made an abrupt turn away from her”
a short performance that is part of a longer program
“he did his act three times every evening”
taking a short walk out and back
“we took a turn in the park”