“Top secret” in Japanese
Short answer
Top secret in Japanese is “最高機密” (saikoukimitsu). Full meaning: top secret.
Other ways to say “Top secret” in Japanese
秘中の秘
hichuunohi top secret
厳秘
genpi strict secret, top-secret
トップシークレット
toppushiikuretto top secret
極内
gokunai highly confidential, top secret
極秘事項
gokuhijikou closely-guarded secret, top secret
極秘情報
gokuhijouhou classified information, top secret
Looking for the other direction? Search any Japanese word in the Nihoner lexicon, or practise what you have learned in the learning games.