upmost height

13 LETTERS · STARTS WITH U

upmost height is a valid 13-letter word worth 23 points in Scrabble and 25 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

U1P3M3O1S1T1H4E1I1G2H4T1

1 + 3 + 3 + 1 + 1 + 1 + 0 + 4 + 1 + 1 + 2 + 4 + 1 =23 PTS

DOUBLE WORD → 46TRIPLE WORD → 69

MEANING

What does upmost height mean?