frazzle

Short definition from Wiktionary

Verb

1. 1
   To fray or wear down, especially at the edges.
2. 2
   To drain emotionally or physically.

Noun

1. 1
   A burnt fragment; a cinder or crisp.
2. 2
   The condition or quality of being frazzled; a frayed end.
3. 3
   A messy situation or scene.