unic - valu
- unicameral
- unicorn
- unidentified
- unidentified flying object
- uniform
- unify
- unilateral
- unimpeachable
- uninhibited
- unintentional
- unintentionally
- uninterrupted
- Union
- union
- union catalog
- union contract
- union shop
- unique
- unisex
- unit
- unit price
- unit rule
- unite
- United Arab Emirates
- united front
- United Kingdom of Great Britain and Northern Ireland
- United Nations
- United States
- United States of America
- unity
- universal
- universal joint
- universal product code
- universal suffrage
- universe
- university
- unknown
- unlawful
- unleaded
- unleaded gasoline
