silver has 17 distinct synonyms spread across 7 of its 12 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 soft white precious univalent metallic element having the highest electrical and thermal conductivity of any metal; occurs in argentite and in free form; used in coins and jewelry and tableware and photography
a trophy made of silver (or having the appearance of silver) that is usually awarded for winning second place in a competition
expressing yourself readily, clearly, effectively
“able to dazzle with his facile tongue”
coat with a layer of silver or a silver amalgam
“silver the necklace”
make silver in color
“Her worries had silvered her hair”
turn silver
“The man's hair silvered very attractively”
1 of the 12 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 silver.
Synonyms, antonyms and the broader and narrower relations for silver come from Princeton University’s WordNet. Full sources and licences.