sententious expression

22 LETTERS · STARTS WITH S

sententious expression is a valid 22-letter word worth 30 points in Scrabble and 35 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1E1N1T1E1N1T1I1O1U1S1E1X8P3R1E1S1S1I1O1N1

1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 8 + 3 + 1 + 1 + 1 + 1 + 1 + 1 + 1 =30 PTS

DOUBLE WORD → 60TRIPLE WORD → 90

MEANING

What does sententious expression mean?