umm

Umm, let me think about it for a moment.

She hesitated for a moment, umm, then made her decision.

Umm, I'm not sure if I can make it to the party.

He paused for a moment, umm, before answering the question.

Umm, could you repeat that one more time, please?

She said umm a few times before starting her presentation.

Umm, I think we should consider all the options before making a decision.

He always says umm when he's trying to remember something.

Umm, I'm not quite sure what you mean by that.

She tends to say umm a lot when she's nervous.