Inflect

Part of speech: verb (v.)

1. To turn from a direct line or course; to bend; to incline, to deflect; to curve; to bow. Are they [the rays of the sun] not reflected, refracted, and inflected by one and the same principle Sir I. Newton.

2. To vary, as a noun or a verb in its terminations; to decline, as a noun or adjective, or to conjugate, as a verb.

3. To modulate, as the voice.