transit has 8 distinct synonyms spread across 4 of its 7 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.
make a passage or journey from one place to another
“The tourists moved through the town and bought up all the souvenirs”
pass across (a sign or house of the zodiac) or pass across (the disk of a celestial body or the meridian of a place)
“The comet will transit on September 11”
revolve (the telescope of a surveying transit) about its horizontal transverse axis in order to reverse its direction
cause or enable to pass through
“The canal will transit hundreds of ships every day”
a surveying instrument for measuring horizontal and vertical angles, consisting of a small telescope mounted on a tripod
a facility consisting of the means and equipment necessary for the movement of passengers or goods
Synonyms, antonyms and the broader and narrower relations for transit come from Princeton University’s WordNet. Full sources and licences.