万全ばんぜん Common Noun Noun I-adj English jmdict 1 noun (common) (futsuumeishi)nouns which may take the genitive case particle 'no' adjectival nouns or quasi-adjectives (keiyodoshi) perfection;flawlessness 我が社は、2000年問題への対応は万全です。 We're thoroughly prepared for the Y2K bug.