Cool MateCertainly vs Definitely vs Of course vs Surely vs Undoubtedly
Quando usar cada um em inglês, com significado, registro e exemplos.
Certainly
Top 1000 (muito comum)A2adverb
Definitely
Top 1000 (muito comum)A2adverb
Of course
Top 1000 (muito comum)
Surely
Top 2000 (comum)B1adverb
Undoubtedly
FormalTop 5000 (bastante comum)C1adverb
Mais formal: Undoubtedly
| Certainly | Definitely | Of course | Surely | Undoubtedly | |
|---|---|---|---|---|---|
| Pronúncia | 🇬🇧 /["/ˈsɜːtnli/"]/🇺🇸 /["/ˈsɜːrtnli/"]/ | 🇬🇧 /["/ˈdefɪnətli/"]/🇺🇸 /["/ˈdefɪnətli/"]/ | 🇬🇧 //əv kɔːs//🇺🇸 //əv kɔrs// | 🇬🇧 /["/ˈʃʊəli//ˈʃɔːli/"]/🇺🇸 /["/ˈʃʊrli/"]/ | 🇬🇧 //ʌnˈdaʊtɪdli//🇺🇸 //ʌnˈdaʊtədli// |
| Significado | Com certeza; definitivamente.Definitely; for sure. | Com certeza, sem dúvida alguma.For sure, without a doubt | Com certeza, é óbvio.Definitely, it's obvious. | com certeza; sem dúvidacertainly; without a doubt | Definitivamente; sem dúvida.Definitely; without a doubt. |
| Exemplo | 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 | Neutro | Neutro | Neutro | Neutro | Formal |
| Quão comum | Top 1000 (muito comum) | Top 1000 (muito comum) | Top 1000 (muito comum) | Top 2000 (comum) | Top 5000 (bastante comum) |
| Nível CEFR | A2 | A2 | - | B1 | C1 |
| Classe gramatical | adverb | adverb | adverb | adverb | |
| Colocações | 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 |
| Antônimos | uncertainly, doubtfully | doubtfully, uncertainly | - | doubtfully, unsure | doubtfully, questionably, uncertainly |
| Erros comuns | '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 | Use 'certamente' para dar ênfase ou concordar com algo. É um pouco mais formal que 'com certeza' e funciona bem em situações profissionais, mas pode soar um pouco forte em conversas informais.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. | Use 'definitivamente' para enfatizar a certeza. Funciona bem tanto na fala quanto na escrita. Evite usá-lo em contextos excessivamente formais, onde alternativas como 'certamente' podem ser mais adequadas.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. | Usado em situações informais e formais para afirmar algo óbvio. Evite em escrita muito formal.Used in informal and formal situations to affirm something obvious. Avoid in highly formal writing. | Use 'surely' para expressar certeza. É apropriado em contextos falados e escritos, mas é mais comum em discussões formais. Evite usá-lo em conversas muito casuais onde palavras mais simples como 'definitely' podem se encaixar melhor.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. | Usado para enfatizar certeza ou forte crença; tipicamente em escrita formal ou discursos, não é comum em conversas casuais.Used to emphasize certainty or strong belief; typically in formal writing or speeches, not common in casual conversation. |
Veja em clipes reais
Perguntas frequentes: Certainly vs Definitely vs Of course vs Surely vs Undoubtedly
Qual é a diferença entre Certainly, Definitely, Of course, Surely e 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.
Qual é mais formal: Certainly, Definitely, Of course, Surely e Undoubtedly?
Undoubtedly é a mais formal entre elas.
Qual é mais avançada: Certainly, Definitely, Of course, Surely e Undoubtedly?
Undoubtedly é o nível mais alto, em C1, na escala CEFR.
Pode mostrar um exemplo de cada?
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.
Posso usar Certainly, Definitely, Of course, Surely e Undoubtedly de forma intercambiável?
Nem sempre. Certainly, Definitely, Of course, Surely e Undoubtedly são relacionadas e às vezes se sobrepõem, mas diferem em registro, frequência e uso, então trocar uma pela outra pode mudar o sentido ou o tom. Veja as diferenças acima antes de substituir.