frazzle

1. cause to show the effects of exhaustion or strain.

   Richard was frequently frazzled by the conflicting demands of work and home

   trying to do too much in too little time could frazzle everyone's nerves and ruin your vacation

2. damage or cause to shrivel by burning or exposure to heat.

   families whose homes overlook a field that was frazzled by the fire feared that the flames would reach their houses

   I frazzled my fair skin almost to obliteration

1. the state of being completely exhausted.

   I'm tired, worn to a frazzle

2. the state of being completely burned.

   the grass was regrowing within days of being burned to a frazzle

early 19th century: perhaps a blend of fray¹ and obsolete fazle ‘ravel out’, of Germanic origin. The word was originally East Anglian dialect, with the meaning ‘tear or unravel’; it came into standard British English via the US.