crossroads has 3 distinct synonyms spread across 2 of its 3 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.
a crisis situation or point in time when a critical decision must be made
“at that juncture he had no idea what to do”
a point where a choice must be made
“Freud's work stands at the crossroads between psychology and neurology”
Synonyms, antonyms and the broader and narrower relations for crossroads come from Princeton University’s WordNet. Full sources and licences.