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adj.: OE fst firm < Gmc fastuz (Du. vast / G fest / ON fastr) ← IE past-🔗🔉

adj.: OE fst firm < Gmc fastuz (Du. vast / G fest / ON fastr) ← IE past- solid, firm. ― adv.: OE fste firmly ← adj.: cf. fast

研究社新英和大辞典 ページ 189250 でのadj.: OE fst firm < Gmc fastuz ← IE past-単語。