sympathetic ink

15 LETTERS · STARTS WITH S

sympathetic ink is a valid 15-letter word worth 30 points in Scrabble and 32 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1Y4M3P3A1T1H4E1T1I1C3I1N1K5

1 + 4 + 3 + 3 + 1 + 1 + 4 + 1 + 1 + 1 + 3 + 0 + 1 + 1 + 5 =30 PTS

DOUBLE WORD → 60TRIPLE WORD → 90

MEANING

What does sympathetic ink mean?