1735, from Latin intolerantem (nominative intolerans) "not enduring, impatient, intolerant; intolerable," from in- ânotâ (see in- (1)) + tolerans, present participle of tolerare âto bear, endureâ (see toleration). Of plants, from 1898. The noun meaning "intolerant person or persons" is from 1765.[intolerant etymology, intolerant origin, 英语词源]