- united states mint
- united states naval academy
- up_to_dateness
- under a woman's domination
- unframed
- unsavoury
- universally popular
- unforgiven
- unreleased
- unrhetorical
- uzbekistani
- unsparingly
- united arab republic
- underhanded
- underhand
- unipolar depression
- unmusical
- unmelodious
- unmyelinated
- undecipherable
- universal resource locator
- unmechanized
- uterine amenorrhoea
- United Mine Workers of America
- United Mine Workers
- unmistakeable
- uvea
- unmatching
- unseasonableness
- unmanageable (as a man)
- unmilitary
- unoccurred
- up here
- underspend
- underwing
- undrinkable
- urogale
- untellable
- underwater archaeology
- underwater archeology
- unstimulating
- undaunted by
- unprecedented
- unregulated
- unsugared
- unsatisfactorily
- unalterability
- unsolvability
- unpleasing
- united states dollar