This appears to be a non-standard or misspelled variant, possibly 'drudher' or a regional dialectal form with unclear meaning in standard English.
Etymology is unclear due to this word not appearing in standard dictionaries. It may be a regional dialect term, obsolete word, or scribal error.
Sometimes words like 'deludher' appear in historical texts as dialect variations or archaic spellings—they remind us that language is constantly evolving and that standardization is surprisingly recent!
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