dependableness

NOUN /dɪ'pɛndəbəlnɛs/
14 LETTERS · 5 SYLLABLES · STARTS WITH D

dependableness is a valid 14-letter word worth 20 points in Scrabble and 25 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
D2E1P3E1N1D2A1B3L1E1N1E1S1S1
2 + 1 + 3 + 1 + 1 + 2 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 1 =20 PTS
DOUBLE WORD → 40TRIPLE WORD → 60
MEANING

What does dependableness mean?