1. the quality or state of being unwilling to accept or respect beliefs, practices, or people that differ from one's own
Usage: abstract noun; formal register
2. inability or unwillingness to endure or bear something (such as pain, hardship, or a substance)
Usage: less common than sense 1

Examples

• The intolerantness of the regime toward religious minorities led to widespread persecution.
• Her intolerantness of opposing viewpoints made productive dialogue impossible.
• The community's intolerantness toward cultural differences created tension among residents.
• His intolerantness of criticism prevented him from learning from his mistakes.
• Educational programs aim to reduce intolerantness and promote mutual respect.
• The intolerantness displayed by some groups has sparked important conversations about diversity.