I can't tell how different they are when it's come to pronouncing both of these words. Do you say
can as in like a tin "can"
and
can't as "khan" for the pronounciation?
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From the OED (British pronunciation):
kæn\
From Merriam-Webster (American pronunciation):
\kən, ˈkan also ˈken; dialect ˈkin\
Here is an IPA reference, in case you are unfamiliar with the symbols used.
To me the AE pronuciation allows more sound to the "e" whereas as a BE speaker I would pronounce hardly any "e" sound and it would sound shorter, more like "kan" such that it ryhmes with the word "pan"
Talking about stressed contexts, such as: "Yes, he can." I had always heard [kʰæn] in Canada, and in New England, [kʰeən]. I have just started hearing another variant, [kʰɛn] for the first time, from folks in Minnesota and upstate NY.
Looked this up and couldn't find anything. Anyone have a map? Is this part of a general pattern, or is this unique to "can"?