1517, "permission granted by authority, license," from M.Fr. tolération (15c.), from L. tolerationem (nom. toleratio) "a bearing, supporting, enduring," from toleratus, pp. of tolerare "to tolerate, lit. "to bear" (see extol). Meaning "forbearance, sufferance" is from 1582. Religious sense is from Act of Toleration, statute granting freedom of religious worship (with conditions) to dissenting Protestants in England, 1689.