Archaic or dialectal variant possibly related to 'heaviness' or 'heavy some'; lacking clear modern usage or definition.
This appears to be an obsolete or extremely rare variant, possibly from Middle English combining 'heaven' or 'heavy' with '-some' (suffix meaning 'characterized by'). The '-some' suffix creates adjectives from nouns (like 'wholesome'). This word's origin is uncertain and may be a scribal variant or dialect form no longer in use.
Some words in historical texts are so rare or corrupted by manuscript copying that their meanings are genuinely lost to history—'heavinsogme' might be one of these linguistic mysteries, reminding us that English has been spoken for 1,500 years and not everything survived!
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