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v. al·tered, al·ter·ing, al·ters v.tr. 1. To change or make different; modify: altered my will. 2. To adjust (a garment) for a better fit. 3. To castrate or spay (an animal, such as a cat or a dog). v.intr. To change or become different. [Middle English alteren, from Old French alterer, from Medieval Latin alterāre, from Latin alter, other; see al-1 in the Appendix of Indo-European roots.] al′ter·a·bili·ty, alter·a·ble·ness n. alter·a·ble adj. alter·a·bly adv. |
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