intolerance has no recorded synonym. 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 tolerance.
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.
impatience with annoyances
“his intolerance of interruptions”
unwillingness to recognize and respect differences in opinions or beliefs
Synonyms, antonyms and the broader and narrower relations for intolerance come from Princeton University’s WordNet. Full sources and licences.