salt has 5 distinct synonyms spread across 3 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.
a compound formed by replacing hydrogen in an acid by a metal (or a radical that acts like a metal)
white crystalline form of especially sodium chloride used to season and preserve food
negotiations between the United States and the Union of Soviet Socialist Republics opened in 1969 in Helsinki designed to limit both countries' stock of nuclear weapons
sprinkle as if with salt
“the rebels had salted the fields with mines and traps”
add zest or liveliness to
“She salts her lectures with jokes”
1 of the 9 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 salt.
Synonyms, antonyms and the broader and narrower relations for salt come from Princeton University’s WordNet. Full sources and licences.
preserve with salt
“people used to salt meats on ships”