Cool MateCertainly vs Definitely vs Of course vs Surely vs Undoubtedly
Cuándo usar cada una en inglés, con significado, registro y ejemplos.
Certainly
Top 1000 (muy común)A2adverb
Definitely
Top 1000 (muy común)A2adverb
Of course
Top 1000 (muy común)
Surely
Top 2000 (común)B1adverb
Undoubtedly
FormalTop 5000 (bastante común)C1adverb
Más formal: Undoubtedly
| Certainly | Definitely | Of course | Surely | Undoubtedly | |
|---|---|---|---|---|---|
| Pronunciación | 🇬🇧 /["/ˈsɜːtnli/"]/🇺🇸 /["/ˈsɜːrtnli/"]/ | 🇬🇧 /["/ˈdefɪnətli/"]/🇺🇸 /["/ˈdefɪnətli/"]/ | 🇬🇧 //əv kɔːs//🇺🇸 //əv kɔrs// | 🇬🇧 /["/ˈʃʊəli//ˈʃɔːli/"]/🇺🇸 /["/ˈʃʊrli/"]/ | 🇬🇧 //ʌnˈdaʊtɪdli//🇺🇸 //ʌnˈdaʊtədli// |
| Significado | Definitivamente; por supuesto.Definitely; for sure. | Sin duda, por supuestoFor sure, without a doubt | Claro que sí, es obvio.Definitely, it's obvious. | ciertamente; sin dudacertainly; without a doubt | Definitivamente; sin duda.Definitely; without a doubt. |
| Ejemplo | Without treatment, she will **almost certainly** die. | I definitely remember sending the letter. | Are you joining us for dinner tonight? Of course! | Surely we should do something about it? | She is undoubtedly the best candidate for the position. |
| Registro | Neutral | Neutral | Neutral | Neutral | Formal |
| Qué tan común | Top 1000 (muy común) | Top 1000 (muy común) | Top 1000 (muy común) | Top 2000 (común) | Top 5000 (bastante común) |
| Nivel CEFR | A2 | A2 | - | B1 | C1 |
| Categoría gramatical | adverb | adverb | adverb | adverb | |
| Colocaciones | certainly agree, certainly possible, certainly not, certainly true, certainly yes | definitely agree, definitely believe, definitely know | of course not, of course yes, of course you can, of course it is | surely believe, surely know, surely must | undoubtedly true, undoubtedly clear, undoubtedly helpful |
| Antónimos | uncertainly, doubtfully | doubtfully, uncertainly | - | doubtfully, unsure | doubtfully, questionably, uncertainly |
| Errores comunes | 'Certainly' is often incorrectly used in place of 'certain' in adjectives., Learners might confuse 'certainly' with 'definitely' without noticing the subtle nuance., Some learners use 'certainly' in inappropriate contexts, such as casual greetings. | Often confused with 'defiantly' which means resisting authority., Sometimes spelled incorrectly as 'definately'. | Using it in formal writing where a different expression is needed., Confusing it with other affirmations like 'certainly' or 'definitely'. | Confusing 'surely' with 'sure' — 'sure' can be an adjective., Using 'surely' as a response when a simple 'yes' would suffice., Omitting 'surely' in a sentence where it clarifies certainty. | Confused with 'undoubtably', which is incorrect., Omitting it when certainty is implied., Using it in informal contexts where 'definitely' is more suitable. |
| Notas de uso | Usa 'ciertamente' cuando quieras enfatizar una afirmación o acuerdo. Es más formal que 'seguro' y funciona bien en entornos profesionales, pero puede sonar demasiado fuerte en conversaciones informales.Use 'certainly' when you want to emphasize affirmation or agreement. It is more formal than 'sure' and works well in professional settings, but might feel too strong in casual conversations. | Usa 'definitivamente' para enfatizar certeza. Funciona bien tanto en inglés hablado como escrito. Evita usarlo en contextos demasiado formales donde alternativas como 'ciertamente' podrían ser más adecuadas.Use 'definitely' to emphasize certainty. It fits well in both spoken and written English. Avoid using it in overly formal contexts where alternatives like 'certainly' might be more suitable. | Se usa en situaciones informales y formales para afirmar algo obvio. Evitar en escritura muy formal.Used in informal and formal situations to affirm something obvious. Avoid in highly formal writing. | Usa 'seguramente' para expresar certeza. Es apropiado en contextos hablados y escritos, pero es más común en discusiones formales. Evita usarlo en conversaciones muy informales donde palabras más simples como 'definitivamente' podrían encajar mejor.Use 'surely' to express certainty. It’s appropriate in both spoken and written contexts but is more common in formal discussions. Avoid using it in very casual conversations where simpler words like 'definitely' might fit better. | Se usa para enfatizar certeza o fuerte creencia; típicamente en escritos formales o discursos, no es común en conversaciones informales.Used to emphasize certainty or strong belief; typically in formal writing or speeches, not common in casual conversation. |
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Preguntas frecuentes: Certainly vs Definitely vs Of course vs Surely vs Undoubtedly
¿Cuál es la diferencia entre Certainly, Definitely, Of course, Surely y Undoubtedly?
Certainly: Definitely; for sure. Definitely: For sure, without a doubt Of course: Definitely, it's obvious. Surely: certainly; without a doubt Undoubtedly: Definitely; without a doubt.
¿Cuál es más formal: Certainly, Definitely, Of course, Surely y Undoubtedly?
Undoubtedly es la más formal de estas.
¿Cuál es más avanzada: Certainly, Definitely, Of course, Surely y Undoubtedly?
Undoubtedly es la de nivel más alto, en C1, en la escala CEFR.
¿Puedes mostrar un ejemplo de cada una?
Certainly: Without treatment, she will **almost certainly** die. Definitely: I definitely remember sending the letter. Of course: Are you joining us for dinner tonight? Of course! Surely: Surely we should do something about it? Undoubtedly: She is undoubtedly the best candidate for the position.
¿Puedo usar Certainly, Definitely, Of course, Surely y Undoubtedly indistintamente?
No siempre. Certainly, Definitely, Of course, Surely y Undoubtedly están relacionadas y a veces se solapan, pero difieren en registro, frecuencia y uso, así que cambiar una por otra puede alterar el significado o el tono. Revisa las diferencias de arriba antes de sustituir.