The fortress stood unassailed, as no enemy had ever breached its walls.

The foreign culture was unassimilable to the local community.

The task remained unassigned.

She defended her position unassailably during the debate.

The unassembled furniture arrived in separate pieces.

She spoke unassertively during the meeting.

She danced unassessably on the stage.

The damage caused by the hurricane was unassessable.

Her unassertiveness often leads to others taking advantage of her.

This task is unassignable to anyone else.