Has anybody heard of vowel-backing in English?
In East-Central Alabama, USA, I have observed forms such as:
suckint ['sOkh Inˀ] for "second"
butter ['bOD ɚ] for "better"
woonda ['wUnd ә] for "window"
NOTE: I'm using the symbol [O] instead of [^] because it appears to be a mid-back, lax, pure vowel, rather than a mid-central one.
Before I moved here, I expected vowel-fronting (not vowel-backing) in this area.