Uh (interjection)

Used to indicate hesitation or uncertainty when speaking.

Origin:

The word "uh" is an informal and spoken form of the word "um", which is used as a filler to indicate hesitation or uncertainty when speaking. the word is believed to have originated in the early 20th century.

Examples:

1. Uh, I'm not sure what time the movie starts.
2. Can you repeat the question? Uh, I didn't quite hear it.
3. I was going to say something, but then I realized I forgot what it was. Uh...
4. I"m sorry, I didn"t catch your name. Uh, what was it again?
5. Uh, excuse me, I think you have my wallet.