great vowel shift

17 LETTERS · STARTS WITH G

great vowel shift is a valid 17-letter word worth 28 points in Scrabble and 30 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

G2R1E1A1T1V4O1W4E1L1S1H4I1F4T1

2 + 1 + 1 + 1 + 1 + 0 + 4 + 1 + 4 + 1 + 1 + 0 + 1 + 4 + 1 + 4 + 1 =28 PTS

DOUBLE WORD → 56TRIPLE WORD → 84

MEANING

What does great vowel shift mean?