nonperceptibleness

18 LETTERS · 6 SYLLABLES · STARTS WITH N

nonperceptibleness is a valid 18-letter word worth 26 points in Scrabble and 34 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

N1O1N1P3E1R1C3E1P3T1I1B3L1E1N1E1S1S1

1 + 1 + 1 + 3 + 1 + 1 + 3 + 1 + 3 + 1 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 1 =26 PTS

DOUBLE WORD → 52TRIPLE WORD → 78

MEANING

What does nonperceptibleness mean?