incubation has 1 distinct synonym spread across 1 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.
maintaining something at the most favorable temperature for its development
(pathology) the phase in the development of an infection between the time a pathogen enters the body and the time the first symptoms appear
sitting on eggs so as to hatch them by the warmth of the body
Synonyms, antonyms and the broader and narrower relations for incubation come from Princeton University’s WordNet. Full sources and licences.