I'm unsure whether to accept the job offer, so I want to think it over.

As the meeting approached, she grew unsurer about her presentation.

She unsurely glanced at the letter before opening it.

Her unsureness about the decision was obvious to everyone in the room.

Because the contract remained unsured, neither party felt comfortable proceeding.

Of all the candidates, Mark was the unsurest about accepting the offer.

Because of the unsurety in the contract, the heirs contested the estate.