Translation guide
Describes someone or something that is firm, unwavering, and loyal. In Japanese, this concept is expressed through various adjectives and phrases that emphasize unchanging resolve, loyalty, or determination.
Describing a person who remains loyal and devoted, especially in relationships or to a cause.
A common adjective meaning faithful, loyal, or devoted. Often used for people, duties, or principles.
彼は妻に忠実だ。
He is steadfastly loyal to his wife.
彼女は自分の信念に忠実だった。
She remained steadfast in her beliefs.
Describes single-minded devotion or wholehearted dedication, often in love or pursuit of a goal.
彼女は彼に一途だ。
She is steadfast in her love for him.
A formal phrase meaning 'unchanging loyalty', suitable for solemn contexts.
彼は王に変わらぬ忠誠を誓った。
He pledged steadfast loyalty to the king.
Describing a person's determination or attitude that does not waver despite difficulties.
An adjective meaning firm, resolute, or determined. Often used with 'とした' to describe an unwavering attitude.
彼は断固とした態度で交渉に臨んだ。
He approached the negotiation with a steadfast attitude.
彼女の決意は断固としている。
Her resolve is steadfast.
A verb phrase meaning 'unshakable' or 'unwavering'. Literally 'does not shake'. Commonly used for beliefs, trust, or determination.
彼の信念は揺るがない。
His beliefs are steadfast.
彼女への信頼は揺るがない。
My trust in her is steadfast.
Literally 'immovable'. Used for unwavering resolve or principles, often in formal or literary contexts.
Describing continuous, unwavering effort or dedication to a task.
Means steady, sound, or sure. Often used for steady progress or persistent effort.
彼は着実に目標に向かって進んでいる。
He is making steadfast progress toward his goal.
着実な努力が成功につながる。
Steadfast effort leads to success.
Means 'steady, painstaking effort'. Implies humble, persistent work without fanfare.
彼の地道な努力が実を結んだ。
His steadfast efforts bore fruit.
Describing a position, policy, or principle that remains constant.
Means unchanging, constant, or immutable. Used for principles, rules, or natural laws.
これは不変の真理だ。
This is a steadfast truth.
会社の方針は不変です。
The company's policy is steadfast.
Means consistent or coherent. Often used for attitudes, policies, or behavior that do not change.
彼は一貫した態度を崩さなかった。
He maintained a steadfast attitude.
忠実 (ちゅうじつ) is a general term for loyalty and faithfulness, suitable for formal and informal contexts. 一途 (いちず) emphasizes single-minded devotion, often with a romantic or passionate nuance, and is more casual.
There is no single Japanese word that covers all nuances of 'steadfast'. Choose the expression based on whether you mean loyalty, resolve, persistence, or unchanging principles. Using a direct translation like '不動' in casual speech may sound overly dramatic.
He has steadfast convictions.