An American who speaks British English or uses mostly British slang.
Sarah is kind of...british-ish.
by Emmabean January 17, 2008
Something that is somewhat or slightly British
He sounded like an American trying to pretend to be British; he sounded Britishish
by they call me fluffy September 30, 2010
something somewhat pertaining to british culture, such as accents, fashion, music, etc.
Dude, that guy's fake accent is British-ish
by trevwood90 August 11, 2010