undemonstrableness

18 LETTERS · 6 SYLLABLES · STARTS WITH U

undemonstrableness is a valid 18-letter word worth 23 points in Scrabble and 30 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

U1N1D2E1M3O1N1S1T1R1A1B3L1E1N1E1S1S1

1 + 1 + 2 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 1 =23 PTS

DOUBLE WORD → 46TRIPLE WORD → 69

MEANING

What does undemonstrableness mean?