alt-alt- /ɒlt $ ɒːlt/ prefix [in nouns] used to refer to something, especially music, that is alternative (=not of the usual or traditional kind): 
She is a fan of alt-folk and alt-country.
She is a fan of alt-folk and alt-country.- freeborn
- Free Church
- Free Church of Scotland
- free collective bargaining
- freedom
- freedom fighter
- Freedom of Information Act
- Freedom Tower
- free enterprise
- free fall
- free-falling
- free-floating
- Freefone
- underwent
- underwhelm
- underworld
- underwrite
- underwriter
- Underwriters' Laboratories
- undeserved
- undesirable
- undetected
- undeterred
- undeveloped
- undid