retundo

Etymology
From.

Verb

 * 1) to beat back, drive back
 * 2) to restrain, check
 * 3) to hammer back (something sharp), blunt or dull
 * 4) to deaden, weaken, frustrate

Conjugation

 * Note: Perfect forms may also be of the form retud-
 * Note: Supine forms and participles may also be of the form retūs-