- Unroof Verb
- Unroot Verb
- Unround Adj Verb
- Unsaddle Verb Past Participle
- Unsanction Verb Noun Past Participle
- Unsaturate Noun Verb
- Unsay Verb Past Participle
- Unscramble Verb Past Participle Pres. Participle
- Unscrew Verb
- Unseal Verb
- Unseam Verb
- Unseat Verb
- Unsecure Adj Verb
- Unsee Verb
- Unseed Verb
- Unselect Verb Adj
- Unsell Verb
- Unsend Verb
- Unserialize Verb
- Unset Past Participle Verb
- Unsettle Verb
- Unsew Verb
- Unsex Verb Past Participle Pres. Participle
- Unshackle Verb
- Unsharpen Verb Past Participle
- Unsheathe Verb
- Unshelter Verb
- Unshielded Adj Verb
- Unshift Verb Noun
- Unship Verb
- Unshoe Verb
- Unshroud Verb
- Unshutter Verb
- Unsign Verb
- Unskew Verb
- Unsling Verb
- Unslotted Adj Past Participle Verb
- Unsluice Verb Past Participle Pres. Participle
- Unsnap Verb Past Participle Pres. Participle
- Unsnarl Verb
- Unsolder Verb
- Unsound Adj Verb
- Unspecialise Verb
- Unspecialize Verb
- Unsphere Verb
- Unspill Verb Past Participle
- Unspiral Verb Past Participle Pres. Participle
- Unsplit Adj Verb
- Unspool Verb
- Unspring Verb
- Unstack Verb Past Participle
- Unstandardise Verb Past Participle
- Unsteady Adj Verb
- Unsterilise Verb
- Unstick Verb
- Unstint Verb
- Unstinted Adj Verb
- Unstitch Verb
- Unstock Verb Past Participle
- Unstop Verb