Enter a clue or pattern or both:
The Clue
Sag on a nag (8 letter answer)
The Answer
SWAYBACK
Tags
Notes
The answer SWAYBACK is so rare that it appears less than once every 2500 puzzles.
Definition
SWAYBACK as an adjective:
1. (dipped, lordotic, swayback, swaybacked) = having abnormal sagging of the spine (especially in horses)