UlaanbaatarU‧laan‧baa‧tar /ˌuːlɑːn ˈbɑːtɑː $ -tər/ 
the capital city of Mongolia, formerly called Ulan Bator
the capital city of Mongolia, formerly called Ulan Bator- Federal Communications Commission
- Federal Deposit Insurance Corporation
- federalism
- Federal Republic of Yugoslavia
- Federal Reserve Bank
- Federal Reserve System
- Federal Trade Commission
- federate
- federation
- Federer, Roger
- Fedex
- fedora
- Feds
- fed up
- fee
- feeble
- feeble-minded
- feeble-mindedness
- feed
- feedback
- feedbag
- feeder
- feeder school
- feeding-bottle
- feeding ground