Dul·les 
(dŭlĭs), Allen Welsh 1893-1969.
(dŭlĭs), Allen Welsh 1893-1969. American public official. Director of the CIA (1953-1961), he resigned after the failed invasion of the Bay of Pigs.
- universal recipient
- universal resource locator
- universal set
- universal time
- universal Turing machine
- universe
- universe of discourse
- university
- univocal
- univocally
- Unix
- unjoint
- unjust
- unjustifiable
- unjustifiably
- unjustly
- unjustness
- unkempt
- unkennel
- unkept
- unkind
- unkindliness
- unkindly
- unkindness
- unkink