in all probability

ADVERB
18 LETTERS · STARTS WITH I

in all probability is a valid 18-letter word worth 25 points in Scrabble and 31 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
I1N1A1L1L1P3R1O1B3A1B3I1L1I1T1Y4
1 + 1 + 0 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 3 + 1 + 3 + 1 + 1 + 1 + 1 + 4 =25 PTS
DOUBLE WORD → 50TRIPLE WORD → 75
MEANING

What does in all probability mean?

ADVERB · 1 SENSE
1

With considerable certainty; without much doubt.