a prioria pri‧o‧ri /ˌeɪ praɪˈɔːraɪ, ˌɑː priˈɔːriː/ adjective, adverb formal 
using previous experiences or facts to decide what the likely result or effect of something will be: 
a ruling made on a priori grounds
using previous experiences or facts to decide what the likely result or effect of something will be: a ruling made on a priori grounds- unisex
- unison
- unit
- Unitarian
- unitary
- Unite
- unite
- United
- united
- United Arab Emirates
- United Artists
- United Farm Workers
- United Kingdom
- United Nations
- United Nations High Commission for Refugees
- United Negro College Fund
- United Reformed Church
- United States Citizenship and Immigration Services
- United States of America
- United Way
- unit price
- unit trust
- unity
- Univ.
- Universal