disagreeable 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. Its one recorded opposite is agreeable.
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.
not to your liking
“a disagreeable situation”
not agreeing with your tastes or expectations
“found the task disagreeable and decided to abandon it”
1 of the 3 recorded senses carries no synonym, antonym or related term, so it is not shown above. Every sense, with its definition and examples, is on the full entry for disagreeable.
Synonyms, antonyms and the broader and narrower relations for disagreeable come from Princeton University’s WordNet. Full sources and licences.