The word 'tolerate' entered English in the early 16th century from the Latin past participle 'toleratus', of the verb 'tolerare', meaning 'to bear, endure, put up with'. The Latin root itself is of uncertain origin, though it may be related to 'tollere', meaning 'to lift, raise', suggesting the concept of bearing a weight. Over time, the meaning evolved from the physical act of enduring hardship to the more abstract social and psychological concept of allowing or permitting something one disagrees with. The modern sense emphasizes forbearance and acceptance rather than mere passive endurance.

Structure: toler (endure) + ate (verb suffix) 'toler' originates from the Latin verb 'tolerare', meaning 'to bear, endure, sustain'. The suffix '-ate' is a verb-forming suffix from Latin '-atus', used to create verbs from nouns or adjectives.