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1510s, "permission granted by authority, license," from Middle French tolération (15c.), from Latin tolerationem (nominative toleratio) "a bearing, supporting, enduring," noun of action from past participle stem of tolerare "to tolerate, literally "to bear" (see extol). Meaning "forbearance, sufferance" is from 1580s. Religious sense is from Act of Toleration, statute granting freedom of religious worship (with conditions) to dissenting Protestants in England, 1689.