Enter a clue or pattern or both:
The Clue
Gradual disappearance (11 letter answer)
The Answer
EVANESCENCE
Tags
Notes
The answer EVANESCENCE is so rare that it appears less than once every 2500 puzzles.
Definition
EVANESCENCE as a noun:
1. the event of fading and gradually vanishing from sight; "the evanescence of the morning mist"