strong argument

15 LETTERS · STARTS WITH S

strong argument is a valid 15-letter word worth 18 points in Scrabble and 24 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1T1R1O1N1G2A1R1G2U1M3E1N1T1

1 + 1 + 1 + 1 + 1 + 2 + 0 + 1 + 1 + 2 + 1 + 3 + 1 + 1 + 1 =18 PTS

DOUBLE WORD → 36TRIPLE WORD → 54

MEANING

What does strong argument mean?