What does 万全 mean?
万全 is a Japanese noun meaning “perfection; flawlessness” in English. It is written as 万全 in kanji, ばんぜん in hiragana, and banzen in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
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.