"The suggestion that Old English hogg was borrowed < Old Welsh huch pig, swine (Welsh hwch , now only in sense ‘sow’) or its cognate Old Cornish hoch (Middle Cornish hoch) is unlikely on phonological grounds, unless the word showed alteration in form as a result of association with... the set of Old English weak masculine nouns [denoting] animals... with a stem-final geminated g in Old English which is not due to West Germanic consonant gemination and therefore does not undergo assibilation: frog, hog, pig, stag, Old English sugga, Old English wicga, and perhaps teg.." (OED)., "Possibly loaned from a non-IE source, or < PIE *suH- 'pig'." (RM)
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