The pronunciation of the first syllable of butcher as /ˈbʊt͡ʃ ..../ is for non-native speakers astonishing. From spelling alone, one would probably guess that it's pronunciation would be more like that of "but" /bʌt/. Surely there must be historic reasons for this (guessing sound-shifts, time of borrowing from french, etc.). What are the reasons for butcher being pronounced the way it is today?
1 Answer
There are a number of words in which a 'u' is pronounced /ʊ/ even in dialects (such as South Eastern English) where it is normally /ʌ/. They all or nearly all have a labial consonant preceding it:
Eg: Pull, push, put, puss, bull, bush, full.
This is not a reliable environment: consider puck, buck, pus, putt, which have /ʌ/ in such dialects.
So there is nothing anomalous about "butcher": it belongs to an established class of words with /ʊ/
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Oh, apparently Wikipedia has a more comprehensive description of the environment for the split; I quoted it in my answer here: english.stackexchange.com/a/254506/77227 It seems that butcher is regular, but I can't think of any other words like it (except butch), since putch and futch are not words.– herissonCommented Dec 30, 2015 at 13:24
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