Made silent, dulled, or rendered incapable of response; stupefied (archaic or dialectal usage).
Past participle of a dialectal verb 'dummer' or 'dumm,' from Germanic roots related to 'dumb.' The suffix '-ed' creates the past tense or adjective form.
This is an ultra-rare word—it shows how English dialects had completely different past tenses for words we'd now use 'dumbfound' for. Regional languages are like linguistic fossils!
Complete word intelligence in one call. Free tier — 50 lookups/day.