adjective

(of a person’s hair, clothes, or appearance) untidy; disordered.

a man with long dishevelled hair

untidy,unkempt,scruffy,messy,in a mess,disordered,disarranged,rumpled,bedraggled,uncombed,ungroomed,tousled,tangled,tangly,knotted,knotty,matted,shaggy,straggly,windswept,windblown,wild,slovenly,slatternly,blowsy,frowzy,ratty,mussed (up),draggle-tailed