SOURCE
CHANGE
/aU/
Spelling: ou, ow, ough
out
towel
Diphthong: /a/ 
+ /U/
SOUND
|
SOURCE
|
CHANGE
|
/aU/ Spelling: ou, ow, ough out Diphthong: /a/ SOUND |
| EME /'u/
|
Great
Vowel Shift |
|