Denshi Jisho — Online Japanese dictionary

ごくひ absolute secrecy
Common word, Na-adjective, Noun, No-adjective 
しんぴ mystery
Common word, Na-adjective, Noun, No-adjective 
便 べんぴ constipation
Common word, Noun, Suru verb, No-adjective 
げんぴ strict secret; top-secret
Noun, No-adjective 
まるひ confidential; secret; classified
Noun, No-adjective 
もくひ keep silent; keep a secret
Noun, Suru verb, No-adjective 
マル マルひ confidential; secret; classified
Noun, No-adjective 
部外 ぶがいひ restricted to the department
Noun 
社外 しゃがいひ company secret
Noun 
中の ひちゅうのひ top secret
Noun 

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