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Long before tolerate meant politely putting up with a neighbor’s opinions, Latin tolerāre meant something much more physical: to bear a weight, endure pain, or keep going under pressure. English picked up tolerate in the 1530s, especially for authorities who allowed an idea or practice to exist by choosing not to suppress it. That older sense never quite vanished; by 1895, doctors were using the word for patients who could withstand irritating treatments or large doses of drugs, and biology soon applied it to organisms surviving harsh conditions. The word’s closest English cousin is the nearly forgotten verb thole, from Old English þolian, “to bear,” though the two are cognates rather than a simple borrowing chain. So when you say you “tolerate” a noisy roommate, you are quietly placing yourself in the same linguistic family as a patient enduring medicine and a plant surviving saltwater: tolerance is endurance wearing a polite social mask.

The Story

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Long before tolerate meant politely putting up with a neighbor’s opinions, Latin tolerāre meant something much more physical: to bear a weight, endure pain, or keep going under pressure. English picked up tolerate in the 1530s, especially for authorities who allowed an idea or practice to exist by choosing not to suppress it. That older sense never quite vanished; by 1895, doctors were using the word for patients who could withstand irritating treatments or large doses of drugs, and biology soon applied it to organisms surviving harsh conditions. The word’s closest English cousin is the nearly forgotten verb thole, from Old English þolian, “to bear,” though the two are cognates rather than a simple borrowing chain. So when you say you “tolerate” a noisy roommate, you are quietly placing yourself in the same linguistic family as a patient enduring medicine and a plant surviving saltwater: tolerance is endurance wearing a polite social mask.