Oofta

[Sonia]

oofta is the correct spelling of the word too often misspelled as uff-da or oofda(although others would disagree). It is an expression used to convey surprise, exhaustion, or a bunch of other feelings a Norwegian may have.

[Justin Bieber]

An exclaimation reacting to something aweful, surprising or tiring

[Sonia]

the expression that of exhausted, or frustrated individual says