uh-ohuh-oh /ˈʌ əʊ $ -oʊ/ interjection informal 
a sound that you make when you have made a mistake, or when something bad is going to happen: 
Uh-oh, I think I just deleted all my work. Uh-oh! Here she comes.
a sound that you make when you have made a mistake, or when something bad is going to happen: Uh-oh, I think I just deleted all my work. Uh-oh! Here she comes.