supposing that

14 LETTERS · STARTS WITH S

supposing that is a valid 14-letter word worth 21 points in Scrabble and 25 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
S1U1P3P3O1S1I1N1G2T1H4A1T1
1 + 1 + 3 + 3 + 1 + 1 + 1 + 1 + 2 + 0 + 1 + 4 + 1 + 1 =21 PTS
DOUBLE WORD → 42TRIPLE WORD → 63
MEANING

What does supposing that mean?

1