adjectival noun or quasi-adjective, takes genitive case の, noun

  1. absolute secrecy.

Variations

Pronunciation Kanji Kana Is Common
極秘 ごくひ

Contained Kanji Breakdown

poles, settlement, conclusion
キョク ゴク きわ.める (4th, N2)
tree, wood
き モク こ- (1st, N5)
fast, quick, sudden
キョク キ ケ (Kentei 1)
obstruction of breath (qi) as it seeks release, variant of other characters
コウ さまた.げられる
sigh(嘆) variant
mouth
くち コウ ク (1st, N4)
or again, furthermore, on the other hand
また ユウ やす (8th, N1)
one, one radical (no.1)
イチ いっ ひと- (1st, N5)
secret, conceal
ヒ ひ.める ひそ.か (6th, N1)
two-branch tree radical (no. 115)
カ いね (Kentei Pre-1)
katakana no radical (no. 4)
ヘツ えい よう (Kentei 1)
tree, wood
き モク こ- (1st, N5)
invariably, certain, inevitable
ヒツ かなら.ず (4th, N3)
heart, mind, spirit
こころ シン (2nd, N4)