what is more

ADVERB
12 LETTERS · STARTS WITH W

what is more is a valid 12-letter word worth 18 points in Scrabble and 18 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
W4H4A1T1I1S1M3O1R1E1
4 + 4 + 1 + 1 + 0 + 1 + 1 + 0 + 3 + 1 + 1 + 1 =18 PTS
DOUBLE WORD → 36TRIPLE WORD → 54
MEANING

What does what is more mean?

ADVERB · 1 SENSE
1

In addition.

“what is more, there's no sign of a change”