She was unashamed of her unconventional lifestyle.

She lived in an unassuming house on the outskirts of town.

The fortress was unassailable, with its high walls and strong defenses.

Her reputation as a leader is unassailable.

He answered the unasked question.

The unaspirated consonant is pronounced without a puff of air.

She unashamedly flaunted her wealth.

The cause of the fire is still unascertained.

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

Some questions are unaskable in certain situations.