► 副詞
こそこそ [(1)こそこそ] [coll] meaning: secret rank: 2
☆ 二人はこそこそ付き合っている ⇨ They are dating secretly, stealthily
暗に [(1)あんに] meaning: secret rank: 3
☆ 私は計画が失敗する事を暗に期待していた ⇨ I was secretly hoping the project would fail
陰乍ら [(3)かげながら] [humble] meaning: secret rank: 4
☆ 陰ながら応援させて頂きます ⇨ I will discreetly root for your from the shade (even though it won’t help much) (☛ Humbly downplay your own contribution)
► 動詞
守秘 [(1)しゅひ] [守秘する] meaning: secret rank: 4
☆ 医者には患者の個人情報を守秘する法的義務が有る ⇨ Doctors have legal obligations to protect the personal information of patients
► 名詞
裏 [(2)うら] [裏が有る] [coll] meaning: secret rank: 1
☆ その話には相当裏が有るようだ ⇨ That deal seems to have a lot of hidden details behind the scenes
裏 [(2)うら] [裏が無い] [coll] meaning: secret rank: 1
☆ 彼には裏は無いと思う ⇨ I don’t think he has a flip side, hidden motives
陰 [(1)かげ] meaning: secret rank: 1
☆ 彼は陰から国を支配している ⇨ He is secretly ruling the country
☆ 彼は陰で過激派を支援していた ⇨ He was secretly supporting the radical group
☆ 彼女は陰から夫を支え続けてきた ⇨ She has been her husband’s pillar of strength behind the scene
秘密 [ひみつ] meaning: secret rank: 1
☆ このソースの作り方は秘密だ ⇨ The recipe of this sauce is a secret
☆ これは秘密だから誰にも言わないでよ ⇨ This is a secret so don’t tell anybody
☆ 彼女は秘密が守れない ⇨ She can’t keep secrets
暗証番号 [(6)あんしょうばんごう] meaning: secret rank: 2
☆ 暗証番号を入力して下さい ⇨ Please enter your PIN
内緒 [ないしょ] meaning: secret rank: 2
☆ お父さんには内緒にしておいてよ ⇨ Don’t tell dad about this, OK? (☛ Personal secrets only)
☆ これは内緒だよ ⇨ This is a secret, OK? (☛ Personal secrets only)
秘訣 [ひけつ] meaning: secret rank: 2
☆ 味の秘訣 ⇨ The secret ingredients, recipe (☛ A secret to achieve something good)
☆ 成功の秘訣 ⇨ The secret of success (☛ A secret to achieve something good)
弱み [よわみ] [弱みを握る] meaning: secret rank: 2
☆ 彼は弱みを握られて言いなりになっている ⇨ He has been blackmailed and following orders (☛ Literally “grab the weakness”)
機密 [きみつ] [liter] meaning: secret rank: 3
☆ 国家機密 ⇨ A state secret. Classified information (☛ Usually political secrets)
マル秘 [まるひ] [coll] meaning: secret rank: 3
☆ マル秘情報 ⇨ Secret information (☛ The sign ㊙ is often used on the covers of classified documents)
裏事情 [(4)うらじじょう] meaning: secret rank: 4
☆ 一般には知られていない裏事情 ⇨ The behind-the-scene circumstances not known to the public
奥義 [(1)おうぎ] meaning: secret rank: 4
☆ 彼は拳法の奥義を極めた ⇨ He perfected the secret skills of the martial arts (☛ A secret truth)
御忍び [おしのび] meaning: secret rank: 4
☆ 大スター二人が一緒にお忍びで旅行した ⇨ The two superstars traveled together incognito
極意 [(1)ごくい] meaning: secret rank: 4
☆ ラーメン作りの極意 ⇨ The final secret of ramen making
守秘 [(1)しゅひ] meaning: secret rank: 4
☆ 社員には企業秘密の守秘義務がある ⇨ Employees are obliged to protect corporate secrets
秘伝 [ひでん] meaning: secret rank: 4
☆ 秘伝のソース ⇨ A secret sauce (recipe) (☛ A secret that passed on only to limited people)
秘密裏 [ひみつり] meaning: secret rank: 4
☆ 政府は秘密裏に交渉を続けていた ⇨ The government has been negotiating in secret
秘め事 [ひめごと] meaning: secret rank: 4
☆ 夫婦の秘め事 ⇨ A secret between husband and wife. Sex (☛ Often an euphemism for sex)
門外不出 [(1)もんがいふしゅつ] meaning: secret rank: 4
☆ 門外不出の調理法 ⇨ A recipe that never leaves the front door, kept secret
► 形容動詞
内緒 [ないしょ] meaning: secret rank: 2
☆ 彼女は親に内緒でアダルトビデオに出ていた ⇨ She was doing adult videos without telling her parents (☛ Personal secrets only)
密か [(1)ひそか] [liter] meaning: secret rank: 2
☆ 彼は密かに彼女に思いを寄せていた ⇨ He was secretly in love with her
☆ 彼等は密かに政府転覆を計画していた ⇨ They were secretly planning to overthrow the government
極秘 [ごくひ] meaning: secret rank: 3
☆ 計画は極秘に進められた ⇨ The project was conducted under extreme secrecy
隠密 [おんみつ] meaning: secret rank: 4
☆ この事は隠密に御願いします ⇨ Please keep this thing private, secret