- lack of tolerance, esp. of others' opinions, beliefs, etc.; bigotry
- a sensitivity to some food, medicine, etc.
Origin of intoleranceClassical Latin intolerantia
- The quality or condition of being intolerant; lack of tolerance.
- Medicine Extreme sensitivity or allergy to a drug, food, or other substance: lactose intolerance.
(countable and uncountable, plural intolerances)