Unsure and Unassured

Unsure adjective - Not feeling sure about the truth, wisdom, or trustworthiness of someone or something.

Unassured and unsure are semantically related in doubtful topic. In some cases you can use "Unassured" instead an adjective "Unsure".

Unassured adjective - Lacking boldness or confidence.

Unsure and unassured are semantically related in doubtful topic. You can use "Unsure" instead an adjective "Unassured", if it concerns topics such as hesitant, uncertain, unfaithful, irresponsible.