sell has 3 distinct synonyms spread across 2 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. Its one recorded opposite is buy.
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 sell come from Princeton University’s WordNet. Full sources and licences.
persuade somebody to accept something
“The French try to sell us their image as great lovers”
give up for a price or reward
“She sold her principles for a successful career”
be approved of or gain acceptance
“The new idea sold well in certain circles”
be responsible for the sale of
“All her publicity sold the products”
deliver to an enemy by treachery
“Judas sold Jesus”
the activity of persuading someone to buy
“it was a hard sell”