particular has 12 distinct synonyms spread across 7 of its 9 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 2 recorded opposites are general, universal.
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.
surpassing what is common or usual or expected
“he paid especial attention to her”
(logic) a proposition that asserts something about some (but not all) members of a class
2 of the 9 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 particular.
Synonyms, antonyms and the broader and narrower relations for particular come from Princeton University’s WordNet. Full sources and licences.