General Prologue, ll. 680-83: the Pardoner Riding Bare-Headed

But hood, for jolitee, wered he noon,      680
For it was trussed up in his walet. 
Hym thoughte he rood al of the newe jet;  [newest (French?) fashion]
Dischevelee, save his cappe, he rood al bare.    683

The Oxford English Dictionary etymology for "dischevelee" derives it from Latin via Old French: "Old French deschevelé past participle, < des- , dis- prefix + Old French chevel , cheveu hair, = medieval Latin dis- , dēcapillātus stripped of hair, shaven, Spanish descabellado ‘bald, having no haire left on his head’: compare Italian (di)scapigliare ‘to deshevell, to disorder..ones head or hairs.’"