Incomprehensibly large (12)
I believe the answer is:
immeasurable
(Other definitions for immeasurable that I've seen before include "Too large to quantify" , "Fathomless" , "very big" , "Limitless" , "Vast mass" .)
I believe the answer is:
immeasurable
(Other definitions for immeasurable that I've seen before include "Too large to quantify" , "Fathomless" , "very big" , "Limitless" , "Vast mass" .)