Enter a clue or pattern or both:
The Clue
Not clear (13 letter answer)
The Answer
INDISCERNIBLE
Tags
Notes
The answer INDISCERNIBLE is so rare that it appears less than once every 2500 puzzles.
Definition
INDISCERNIBLE as an adjective:
1. difficult or impossible to perceive or discern; "an indiscernible increase in temperature"
2. (indiscernible, insensible, undetectable) = barely able to be perceived; "the transition was almost indiscernible"; "an almost insensible change"