probable error

14 LETTERS · STARTS WITH P

probable error is a valid 14-letter word worth 19 points in Scrabble and 23 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

P3R1O1B3A1B3L1E1E1R1R1O1R1

3 + 1 + 1 + 3 + 1 + 3 + 1 + 1 + 0 + 1 + 1 + 1 + 1 + 1 =19 PTS

DOUBLE WORD → 38TRIPLE WORD → 57

MEANING

What does probable error mean?