- Underswing Noun Verb
- Undertake Verb
- Undertax Verb
- Underthrow Noun Verb Past Participle
- Underthrust Noun Verb Past Participle
- Undertighten Verb Past Participle Noun
- Undertint Noun Verb
- Undertrain Verb
- Undertrick Noun Verb Adj
- Underuse Noun Verb
- Underutilize Verb
- Undervalue Verb Noun
- Underwhelm Verb Pres. Participle Past Participle
- Underwork Noun Verb
- Underwrite Verb
- Undesire Noun Verb
- Undevelop Verb
- Undig Verb
- Undigest Verb Past Participle
- Undiminish Verb
- Undiscover Verb
- Undisguise Verb
- Undistinguish Verb Past Participle Pres. Participle
- Undo Verb Noun
- Undock Verb Noun
- Undrape Verb Past Participle Pres. Participle
- Undraw Verb
- Undress Verb Noun Adj
- Undulate Adj Verb
- Unearth Verb
- Unembellish Verb
- Unenclose Verb
- Unencumber Verb
- Unendanger Verb Past Participle
- Unenfranchise Verb
- Unenlighten Verb
- Unentailed Adj Verb
- Unenter Verb
- Unequal Adj Verb
- Unestablish Verb
- Unexpose Verb
- Unextinguish Verb
- Unfalter Verb
- Unfasten Verb
- Unfavorite Verb Noun Adj
- Unfeather Verb Past Participle Pres. Participle
- Unfence Verb
- Unfetter Verb
- Unfilter Verb
- Unfinish Verb
- Unfit Adj Verb Noun
- Unfix Verb
- Unflatter Verb Pres. Participle
- Unfocus Verb
- Unfold Verb Pres. Participle Past Participle
- Unfold over Verb
- Unfollow Verb Noun
- Unfreeze Verb
- Unfrock Verb
- Unfurl Verb