But it did vs Certainly

When to use each in English, with meaning, register, and examples.

But it did

Top 3,000 (common)

Certainly

Top 1,000 (very common)A2adverb
Most common: Certainly
 But it didCertainly
Pronunciation🇬🇧 //bət ɪt dɪd//🇺🇸 //bət ɪt dɪd//🇬🇧 /["/ˈsɜːtnli/"]/🇺🇸 /["/ˈsɜːrtnli/"]/
MeaningA phrase used to say something happened or was true.Definitely; for sure.
ExampleI thought he would lose, but it did.Without treatment, she will **almost certainly** die.
RegisterNeutralNeutral
How commonTop 3,000 (common)Top 1,000 (very common)
CEFR level-A2
Part of speechadverb
Collocationsmake a point, address a concern, prove a factcertainly agree, certainly possible, certainly not, certainly true, certainly yes
Antonyms-uncertainly, doubtfully
Common mistakesUsing without context, leading to confusion., Omitting it and using just 'did' may change meaning., Misplacing in a sentence can affect clarity.'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.
Usage notesCommonly used in conversations or responses to emphasize a point. It’s appropriate in both informal and formal contexts.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.

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But it did
Certainly

Frequently asked questions: But it did vs Certainly

What's the difference between But it did and Certainly?

But it did: A phrase used to say something happened or was true. Certainly: Definitely; for sure.

Which is more common: But it did and Certainly?

Certainly is the most common in everyday English.

Can you show an example of each?

But it did: I thought he would lose, but it did. Certainly: Without treatment, she will **almost certainly** die.

Can I use But it did and Certainly interchangeably?

Not always. But it did and Certainly are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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