Top Definition
mwi
mad wae it, to be totally steamin (pissed) or buzzin on sumthin.
hawhawhaw i wis mwi last night likes
by ABUAMBZA January 18, 2008
6 more definitions
Mwi
When You Are Mwi You Are Drunk Or Steamin
I Was Mwi Last Night
by JakeyBumTumm August 25, 2007
MWI
'Mad Wae It'

to be incredibly drunk
used in West Scotland, mainly Glasgow.
'aww man a was proper MWI last night eh?'
by weeegiemaaan May 13, 2010
mwi
Means - "Mad wae it" / "Mad with it"
To be drunk or full of drungs, most likely to be drunk.
John: "Coming to get mwi this weekend?"
Rydo: "Aye moan, get heavy rat arsed"

Lauren: "You're mwi !"
Brogan: "I know, i'm steamin !"
by Pseudonym202020 September 09, 2011
mwi
met while incarcerated
girl 1: did you date each other before he went to prison?
girl 2: no, we're mwi.
by snugglefrump October 17, 2011
MWI
Man With Ideas. Particularly in the academic context, a brilliant professor or researcher who continuously generates new ideas instead of doing the same research over and over again.
I would work with Prof. Jenkins, he's an MWI!
by droswenw September 27, 2011
MWI
Myspacing While Intoxicated. The act of going on myspace while under the influence of pot, alcohol, or any other drug.
Nikol: Wtf were you talking about?
Me: Sorry, i was MWI, lol.
by benny_boi March 11, 2009

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