What is the meaning of Uff?

phew (expression of disgust, tiredness or relief)

whew (used before, during or after a mentally or physically strenuous activity, or while thinking of it).

Alternative form of auf

on, upon (positioned at the top of)

on, onto, up, to (moving to the top of)

open

open

to get wet, to be wet, to be soaked

to inflate, to be swollen, to be bloated, to be puffy

to be angry

on

an expression of boredom, impatience or annoyance

on

whew (expression of relief)

whew (expression from strenuous labour)

Source: wiktionary.org