alterv. t.[F. altrer, LL. alterare, fr. L. alter other, alius other. Cf. Else, Other.]1. To make otherwise; to change in some respect, either partially or wholly; to vary; to modify.(Shak.)It gilds all objects, but it alters none. (Pope.)My covenant will I not break, nor alter the thing that is gone out of my lips. (Ps. lxxxix. 34.)2. To agitate; to affect mentally.(Milton.)3. To geld.()()v. i. To become, in some respects, different; to vary; to change; as, the weather alters almost daily; rocks or minerals alter by exposure.(Dan. vi. 8.)