cultivation has 4 distinct synonyms spread across 1 of its 5 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.
socialization through training and education to develop one's mind or manners
“her cultivation was remarkable”
(agriculture) production of food by preparing the land to grow crops (especially on a large scale)
Synonyms, antonyms and the broader and narrower relations for cultivation come from Princeton University’s WordNet. Full sources and licences.
a highly developed state of perfection; having a flawless or impeccable quality
“they performed with great polish”
the process of fostering the growth of something
“the cultivation of bees for honey”
the act of raising or growing plants (especially on a large scale)