file has 9 distinct synonyms spread across 6 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. 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.
Synonyms, antonyms and the broader and narrower relations for file come from Princeton University’s WordNet. Full sources and licences.
a line of persons or things ranged one behind the other
office furniture consisting of a container for keeping papers in order
a steel hand tool with small sharp teeth on some or all of its surfaces; used for smoothing wood or metal