irrefutableness

15 LETTERS · 6 SYLLABLES · STARTS WITH I

irrefutableness is a valid 15-letter word worth 20 points in Scrabble and 24 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

I1R1R1E1F4U1T1A1B3L1E1N1E1S1S1

1 + 1 + 1 + 1 + 4 + 1 + 1 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 1 =20 PTS

DOUBLE WORD → 40TRIPLE WORD → 60

MEANING

What does irrefutableness mean?