Welsh/UK slang

(adj): stupid, slow, 'not too bright'
"She's dull as fuck man."
by welshwords17 April 19, 2005
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boring or not fun; used to describe a party

the opposite of "live"
Mike: This party sucks.

George: I know, its so dull.

Mike: This is such a dull night.
by watermelonman123 November 20, 2011
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opposite of lit.

A very boring party or social gathering.
After being at the party for a few minutes, Brooke texted her friends saying, "Don't come to the party, it's super dull."
by @EmilyTheFlannelGirl June 22, 2016
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