self-mastered

13 LETTERS · 2 SYLLABLES · STARTS WITH S

self-mastered is a valid 13-letter word worth 18 points in Scrabble and 20 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1E1L1F4-0M3A1S1T1E1R1E1D2

1 + 1 + 1 + 4 + 0 + 3 + 1 + 1 + 1 + 1 + 1 + 1 + 2 =18 PTS

DOUBLE WORD → 36TRIPLE WORD → 54

MEANING

What does self-mastered mean?