course has 16 distinct synonyms spread across 9 of its 13 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.
education imparted in a series of lessons or meetings
“he took a course in basket weaving”
a mode of action
“if you persist in that course you will surely fail”
a line or route along which something travels or moves
“the hurricane demolished houses in its path”
(construction) a layer of masonry
“a course of bricks”
facility consisting of a circumscribed area of land or water laid out for a sport
“the course had only nine holes”
move swiftly through or over
“ships coursing the Atlantic”
Synonyms, antonyms and the broader and narrower relations for course come from Princeton University’s WordNet. Full sources and licences.
hunt with hounds
“He often courses hares”