tincture has 9 distinct synonyms spread across 3 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.
a substance that colors or dyes
an indication that something has been present
“there wasn't a trace of evidence for the claim”
(pharmacology) a medicine consisting of an extract in an alcohol solution
fill, as with a certain quality
“The heavy traffic tinctures the air with carbon monoxide”
stain or tinge with a slight amount of a color
“The sky was tinctured red”
Synonyms, antonyms and the broader and narrower relations for tincture come from Princeton University’s WordNet. Full sources and licences.