ろう
牢
こ
固

'taru' adjective, adverb taking the と particle

  1. firm, solid, inflexible, immovable.

Variations

Pronunciation Kanji Kana Is Common
ろう
牢
こ
固
 牢固 ろうこ
ろう
牢
こ
乎
 牢乎 ろうこ

Contained Kanji Breakdown

prison, jail, hardness
ロウ　かた.い　ひとや (Kentei Pre-1)
shaped crown, katakana u radical (no. 40)
ベン　メン (Kentei 1)
dot, tick or dot radical (no. 3)
チュ (Kentei 1)
wa-shaped crown radical (no. 14)
ベキ (Kentei 1)
cow
うし　ギュウ　ご (2nd, N4)
katakana no radical (no. 4)
ヘツ　えい　よう (Kentei 1)
dry, parch, ebb
ひ.る　カン　ほ.す (6th, N2)
harden, set, clot
かた.める　コ (4th, N2)
box, box or enclosure radical (no. 31)
イ　コク (Kentei 1)
old
コ　ふる.い　ふゆ (2nd, N4)
ten
ジュウ　ジッ　ジュッ (1st, N5)
mouth
くち　コウ　ク (1st, N4)