uncertainty

NOUN /ən'sɜrtənti/
11 LETTERS · 4 SYLLABLES · STARTS WITH U

uncertainty is a valid 11-letter word worth 16 points in Scrabble and 19 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
U1N1C3E1R1T1A1I1N1T1Y4
1 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 4 =16 PTS
DOUBLE WORD → 32TRIPLE WORD → 48
MEANING

What does uncertainty mean?