sinisterly

10 LETTERS · 4 SYLLABLES · STARTS WITH S

sinisterly is a valid 10-letter word worth 13 points in Scrabble and 14 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1I1N1I1S1T1E1R1L1Y4

1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 4 =13 PTS

DOUBLE WORD → 26TRIPLE WORD → 39

MEANING

What does sinisterly mean?