blame has 18 distinct synonyms spread across 6 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. Its one recorded opposite is absolve.
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.
harass with constant criticism
“Don't always pick on your little brother”
an accusation that you are responsible for some lapse or misdeed
“his incrimination was based on my testimony”
a reproach for some lapse or misdeed
“he took the blame for it”
Synonyms, antonyms and the broader and narrower relations for blame come from Princeton University’s WordNet. Full sources and licences.