堅固(けんご)

けんご
na-adjective, noun
solid; firm; secure
formaldescriptive
1. solid; firm; sturdy
Physically strong and difficult to break or destroy. Used for structures, fortifications, and materials.
堅固(けんご)な城壁(じょうへき)だ。
It is a solid castle wall.
堅固(けんご)な守(まも)りを築(きず)いた。
They built a strong defense.
この橋(はし)は堅固(けんご)な構造(こうぞう)で知(し)られている。
This bridge is known for its solid construction.
2. firm; steadfast; unwavering
Figuratively strong in will, determination, or conviction. Used for describing a person's resolve or beliefs.
堅固(けんご)な意志(いし)を持(も)つ。
To have a firm will.
彼女(かのじょ)の信念(しんねん)は堅固(けんご)だった。
Her conviction was unwavering.
長年(ながねん)の努力(どりょく)で堅固(けんご)な信頼(しんらい)関係(かんけい)を築(きず)き上(あ)げた。
Through years of effort, they built a firm relationship of trust.

堅(けん) means 'hard' or 'firm,' and 固(ご) means 'solid' or 'fixed.' Together they emphasize strength and durability. The word has a somewhat literary or formal tone and is commonly found in historical, military, and written contexts.

Common collocations

Similar words

  • 頑丈(がんじょう) — sturdy, robust (more colloquial, used for everyday objects and physical strength)
  • 強固(きょうこ) — strong, firm (emphasizes power and resistance; often used for abstract things like resolve or systems)
  • 丈夫(じょうぶ) — durable, strong (everyday word for things that last or people who are healthy)

Related Words

Compare: 頑丈(がんじょう) (sturdy, robust)
Compare: 強固(きょうこ) (strong, firm (emphasizes power…)
Compare: 丈夫(じょうぶ) (durable, strong)
Compare: 頑丈(がんじょう)な (sturdy)
general
Added 2026.4.1 7:14 · Revised 2026.9.2 13:02
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