Unembellished, without addition or decoration; not ornate, simple; not coloured; (of hair) worn straight, not curled; (of a person's name) without…

= dishevel, adj. Obsolete.

Unparted.

Of hair: Out of ‘tress’ or plait; hanging loose.

Cast or driven about loosely in all directions; thrown broadcast. †Of the hair: Disordered.

figurative. Disordered, unkempt.

Of plants: Rambling or straggling in growth or habit; straying. Also of hair.

(un-, prefix1 affix 2.)