1
steadfast in something
后接名词或动名词，表示‘在…方面坚定不移’。
She remained steadfast in her commitment to education.
她坚守对教育的承诺。
忠诚的；忠贞不渝的
先理解核心含义，再看它在真实句子里的用法。
忠诚的；忠贞不渝的
firmly loyal and constant; not changing in commitment or support
She remained steadfast in her commitment to education.
她坚守对教育的承诺。
固定不变的；稳定不变的。
Fixed or unchanging; steady.
坚定的；不可动摇的
marked by firm determination or resolution; not shakable
坚定不移的；忠诚的；不动摇的。
Firmly loyal or constant; unswerving.
忠诚可靠的
firm and dependable especially in loyalty
Despite the criticism, she remained steadfast in her support for the project.
尽管受到批评，她仍然坚定地支持这个项目。
AI contextual example
His steadfast loyalty to his friends made him someone everyone could trust.
他对朋友坚定不移的忠诚使他成为人人都能信任的人。
AI contextual example
The team's steadfast commitment to quality earned them a great reputation.
团队对质量的坚定承诺为他们赢得了良好的声誉。
AI contextual example
steadfast resolve
坚定的决心。
WordNet
后接名词或动名词，表示‘在…方面坚定不移’。
She remained steadfast in her commitment to education.
她坚守对教育的承诺。
作定语修饰名词，表示‘坚定的，不变的’。
They offered steadfast support during the crisis.
他们在危机期间提供了坚定的支持。
常用系表结构，表示‘保持坚定’。
Despite the challenges, he remained steadfast.
尽管面临挑战，他依然坚定不移。
Not this
He worked steadfast on the project.
Use this
He worked steadfastly on the project.
错误使用了形容词‘steadfast’修饰动词‘worked’，英语中修饰动词需用副词形式‘steadfastly’。
Not this
She is steadfast with her principles.
Use this
She is steadfast in her principles.
介词搭配错误，‘steadfast’后通常接‘in’表示‘在…方面坚定’，而非‘with’。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
忠贞不渝；坚定不移的忠诚
The knight was known for his steadfast loyalty to the king.
这位骑士以对国王的忠诚而闻名。
坚定的决心
Her steadfast determination helped her overcome every obstacle.
她坚定的决心帮助她克服了每一个障碍。
保持坚定；毫不动摇
We must remain steadfast in our beliefs.
我们必须坚定自己的信念。
坚定不移的支持
He gave me steadfast support throughout the difficult year.
在那艰难的一年里，他给予了我坚定不移的支持。
坚决拒绝
Their steadfast refusal to compromise surprised everyone.
他们坚决拒绝妥协，令所有人感到惊讶。
坚如磐石；坚定不移
Through every setback, she has been as steadfast as a rock.
面对每一次挫折，她都坚如磐石。
忠实不渝；忠诚可靠
He has remained steadfast and true to his family through all the difficulties.
历经所有困难，他对家人始终忠实不渝。
所以，我亲爱的弟兄们，你们务要坚定不移，不可动摇，常常竭力多做主工。
Paul encourages the Corinthians to stay steadfast in their faith and good works.
保罗劝勉哥林多人要在信仰和善行上保持坚定不移。
《坚定的锡兵》
In this fairy tale, the little tin soldier remains steadfast in his love despite many dangers.
在这个童话中，小锡兵尽管经历重重危险，仍然对爱情坚定不移。
发短 /ɛ/ 音 (如 head, bread)
Use steadfast naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 steady（稳定）和 fast（牢固）拼在一起：像钉牢般稳定不摇，就是 steadfast（坚定不动摇）。
语域：formal 常见场景：formal writing、public speeches steadfast 是比较正式的用词，多用于书面语或正式演讲中，尤其描述坚定的信念、忠诚或决心时（如 steadfast loyalty / steadfast support）。日常口语中较少使用。
词尾 /fæst/ 与 fast 完全同音，与 last、past 押韵（同为 /æst/）；词首或词中的 stead 读 /stɛd/，与 steady、instead 中的 stead 同音。注意 breakfast 拼写以 -fast 结尾，但读作 /ˈbrɛkfəst/，不是 /fæst/。
Dictionary facts from ECDICT, WIKTIONARY.
Watch the sound change