fine has 15 distinct synonyms spread across 5 of its 10 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 coarse.
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.
of textures that are smooth to the touch or substances consisting of relatively small particles
“wood with a fine grain”
4 of the 10 recorded senses carry no synonym, antonym or related term, so they are not shown above. Every sense, with its definition and examples, is on the full entry for fine.
Synonyms, antonyms and the broader and narrower relations for fine come from Princeton University’s WordNet. Full sources and licences.