frost has 8 distinct synonyms spread across 5 of its 8 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.
United States poet famous for his lyrical poems on country life in New England (1874-1963)
provide with a rough or speckled surface or appearance
“frost the glass”
Synonyms, antonyms and the broader and narrower relations for frost come from Princeton University’s WordNet. Full sources and licences.
cover with frost
“ice crystals frosted the glass”
damage by frost
“The icy precipitation frosted the flowers and they turned brown”