Definitely vs Yes i can

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

Definitely

Top 1,000 (very common)A2adverb

Yes i can

Top 2,000 (common)
Most common: Definitely
 DefinitelyYes i can
Pronunciation🇬🇧 /["/ˈdefɪnətli/"]/🇺🇸 /["/ˈdefɪnətli/"]/🇬🇧 //jɛs aɪ kæn//🇺🇸 //jɛs aɪ kæn//
MeaningFor sure, without a doubtA way to agree or say you are able to do something.
ExampleI definitely remember sending the letter.Are you available for the meeting? Yes I can make it.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR levelA2-
Part of speechadverb
Collocationsdefinitely agree, definitely believe, definitely knowYes, I can help, Yes, I can attend, Yes, I can manage
Antonymsdoubtfully, uncertainly-
Common mistakesOften confused with 'defiantly' which means resisting authority., Sometimes spelled incorrectly as 'definately'.Using 'Yes I can' in overly formal contexts., Confusing it with 'Yes, I can do it.' which is more specific., Not using appropriate tone for the situation.
Usage notesUse '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.Used to affirmatively respond to a question or request. It's informal and typically used in conversation.

See it in real clips

Definitely
Yes i can

Frequently asked questions: Definitely vs Yes i can

What's the difference between Definitely and Yes i can?

Definitely: For sure, without a doubt Yes i can: A way to agree or say you are able to do something.

Which is more common: Definitely and Yes i can?

Definitely is the most common in everyday English.

Can you show an example of each?

Definitely: I definitely remember sending the letter. Yes i can: Are you available for the meeting? Yes I can make it.

Can I use Definitely and Yes i can interchangeably?

Not always. Definitely and Yes i can 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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