observable behavior

19 LETTERS · STARTS WITH O

observable behavior is a valid 19-letter word worth 33 points in Scrabble and 38 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
O1B3S1E1R1V4A1B3L1E1B3E1H4A1V4I1O1R1
1 + 3 + 1 + 1 + 1 + 4 + 1 + 3 + 1 + 1 + 0 + 3 + 1 + 4 + 1 + 4 + 1 + 1 + 1 =33 PTS
DOUBLE WORD → 66TRIPLE WORD → 99
MEANING

What does observable behavior mean?

1