Enter a clue or pattern or both:
The Clue
Upward slope (9 letter answer)
The Answer
ACCLIVITY
Tags
Notes
The answer ACCLIVITY is so rare that it appears less than once every 2500 puzzles.
Definition
ACCLIVITY as a noun:
1. (ascent, acclivity, rise, raise, climb, upgrade) = an upward slope or grade (as in a road); "the car couldn't make it up the rise"