(1)(因共同的利益、业务或爱好而结成的)兄弟会

(2)〈美〉大学生联谊会
美国大学中的学生组织，主要为促进会员之间的友谊和福利而组成，常以希腊字母命名并有秘密的仪式。

• unemployment insurance
• unemployment relief arrangement
• unemployment tax
• unemployment trust fund
• unencumbered
• unenforceable contract
• unequal
• unequivocal
• U.N.E.S.C.O.
• unethical conduct
• unexpired term
• unfair comment
• unfair competition
• unfair dismissal
• unfair hearing
• unfair labor practice
• unfair methods of competition
• unfair prejudice
• unfair trade practices
• unfaithful
• unfit
• unfit for food
• unfitness to plead
• unfit premises
• ungeld