frazzle

Originally an East Anglian word. Either from a variant of the now obsolete fazle (“to unravel”), altered due to influence from fray, or from a blend of fazle and fray. fazle comes from earlier fasel, which was inherited from Middle English facelyn (“[of the end of a rope, or of cloth] to unravel”). Middle English facelyn was a verbal derivative of the noun fasylle (“frayed edge”), which was in turn a derivative (with the diminutive suffix -el) of Old English fæs (“fringe, border”), from Proto-West Germanic fas, from Proto-Germanic fasōn. Related to German Faser (“fibre”).