Translation guide
Describes something physically hard, stable, and not easily moved or changed; also used figuratively for plans, beliefs, or foundations that are reliable and strong.
Describing an object or surface that is not soft, does not bend, and feels solid.
General word for hard, firm, or solid. Can describe objects, food, or even a firm handshake.
このベッドは固くて寝心地がいい。
This bed is firm and comfortable to sleep on.
固い地面の上にテントを張った。
We pitched the tent on firm ground.
Emphasizes sturdiness and reliability; often used for well-built objects or structures.
この机はしっかりした作りだ。
This desk is solidly built.
Formal or literary term for solid, firm, or robust, often used for fortifications or structures.
堅固な城壁が町を守っていた。
Solid castle walls protected the town.
Describing something that is fixed in place, steady, and does not wobble.
Means stable, steady, or firmly established. Used for physical stability as well as abstract things like economy or emotions.
この三脚はとても安定している。
This tripod is very firm and solid.
安定した基盤の上に家を建てる。
Build a house on a firm foundation.
Describes something thick, sturdy, and solidly built, like a person's build or a heavy piece of furniture.
がっしりした体格の男性。
A man with a firm and solid build.
Literally 'immovable'; used for something that cannot be shaken, like a firm resolve or an unshakable position.
彼の決意は不動のものだった。
His determination was firm and solid.
Describing abstract things like agreements, facts, or convictions that are certain and trustworthy.
Means firm, steadfast, or unshakable, often used with words like belief, determination, or evidence.
確固たる証拠がないと起訴できない。
Without firm and solid evidence, we cannot prosecute.
彼は確固たる信念を持っている。
He has firm and solid convictions.
Also used figuratively for reliable, sound, or solid plans, ideas, or people.
しっかりした計画を立てよう。
Let's make a firm and solid plan.
Means sound, steady, and reliable, often used for financial matters or a person's character.
堅実な投資をする。
Make a firm and solid investment.
固い (katai) focuses on hardness to the touch. しっかりした (shikkari shita) emphasizes structural integrity and reliability. 安定した (antei shita) highlights stability and balance, often used for systems or conditions.