substantive rank

16 LETTERS · STARTS WITH S

substantive rank is a valid 16-letter word worth 24 points in Scrabble and 29 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1U1B3S1T1A1N1T1I1V4E1R1A1N1K5

1 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 1 + 4 + 1 + 0 + 1 + 1 + 1 + 5 =24 PTS

DOUBLE WORD → 48TRIPLE WORD → 72

MEANING

What does substantive rank mean?