accommodation has 2 distinct synonyms spread across 1 of its 6 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.
making or becoming suitable; adjusting to circumstances
a settlement of differences
“they reached an accommodation with Japan”
in the theories of Jean Piaget: the modification of internal representations in order to accommodate a changing knowledge of reality
living quarters provided for public convenience
“overnight accommodations are available”
(physiology) the automatic adjustment in focal length of the natural lens of the eye
Synonyms, antonyms and the broader and narrower relations for accommodation come from Princeton University’s WordNet. Full sources and licences.