If we inverted the last letters of “possible” to “possibel,” that wouldn’t really match how we pronounce it

I’d probably try to read it as something like “possi-bell”

But our actual pronunciation is more along the lines of “possi-bull” not exactly, and I feel like different dialects might maybe lean more towards the last syllable being more like bill, ball, or boll, but I can’t really imagine any dialect where the pronunciation would match a “bel” spelling.

It’s sort of an unintentional half vowel sound that just happens after making the “b” noise, and not really something we’re intentionally trying to put into the word.

Linguists probably have some specific terminology for it, but I’m no linguist.