be burnt, worn, etc. to a frazzle
be worn to a frazzle
To be exhausted and nervous. I'm just worn to a frazzle after a week with my relatives. I'm so glad that they're leaving tomorrow!
be burnt, worn, etc. to a ˈfrazzle(informal) be completely burnt/extremely tired: After working all weekend at the hospital, Deborah was worn to a frazzle.
See also: frazzle