1) Hipster exclamation of satisfaction.

2)psuedo-street slang signifying that something is exceptional or that it is perfect. Popularised by the t.v. character Arthur Fonzirelli.
The ass on that Pinky Tuscadero- perfectamundo !
by L. Ron Hoover May 14, 2010
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When things are more then perfect
you: that movie was perfect
me: no it was perfectamundo
by L.T.DREAM June 21, 2018
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