FRAZZLE

A burnt fragment; a cinder or crisp.

"The bacon was burned to a frazzle."

The condition or quality of being frazzled; a frayed end.

To fray or wear down, especially at the edges.

"The new puppy has been chewing on everything, and my favorite afghan has become frazzled."

To drain emotionally or physically.

"After dealing with the children all day, I just can't help feeling frazzled."