prerogative instance

20 LETTERS · STARTS WITH P

prerogative instance is a valid 20-letter word worth 27 points in Scrabble and 33 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

P3R1E1R1O1G2A1T1I1V4E1I1N1S1T1A1N1C3E1

3 + 1 + 1 + 1 + 1 + 2 + 1 + 1 + 1 + 4 + 1 + 0 + 1 + 1 + 1 + 1 + 1 + 1 + 3 + 1 =27 PTS

DOUBLE WORD → 54TRIPLE WORD → 81

MEANING

What does prerogative instance mean?