Stark (@stärk), adv. Wholly; entirely; absolutely; quite; as, stark m@ad. Shak.
Held him strangled in his arms till he was stark dead. Fuller.
Stark naked, wholly naked; quite bare.
Strip your sword stark naked. Shak.
☞ According to Professor Skeat, “stark-naked” is derived from steort-naked, or start-naked, literally tail-naked, and hence wholly naked. If this etymology be true the preferable form is stark-naked.