Exactly vs That's what I was thinking

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

Exactly

Top 1,000 (very common)A2adverb

That's what I was thinking

InformalTop 2,000 (common)
Most formal: ExactlyMost common: Exactly
 ExactlyThat's what I was thinking
Pronunciation🇬🇧 /["/ɪɡˈzæktli/"]/🇺🇸 /["/ɪɡˈzæktli/"]/🇬🇧 //ðæts wɒt aɪ wəz ˈθɪŋkɪŋ//🇺🇸 //ðæts wɑt aɪ wəz ˈθɪŋkɪŋ//
MeaningIn a precise or accurate manner.This means you had the same idea as someone else.
ExampleThe instructions say to follow the recipe exactly for the best results.When she suggested pizza for dinner, I said, 'That's what I was thinking.'
RegisterNeutralInformal
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR levelA2-
Part of speechadverb
Collocationsexactly right, exactly what, exactly the same, exactly how, know exactlyThat's what I thought, That's what we need, That's what I meant
Antonymsapproximately, roughly-
Common mistakes'Exactly' is often confused with 'correctly' — they have different nuances., Learners sometimes use 'exact' instead of 'exactly' in adverbial contexts., Misplaced in sentences, such as using it at the beginning instead of near the verb.Using in overly formal situations., Confusing with similar phrases like 'I agree'.
Usage notesUse 'exactly' to emphasize precision or correctness. It's suitable for both spoken and written contexts. Avoid in overly casual conversations where a simpler term may suffice.Used in casual conversation to agree with someone's thought or opinion. Avoid in very formal settings.

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Exactly
That's what I was thinking

Frequently asked questions: Exactly vs That's what I was thinking

What's the difference between Exactly and That's what I was thinking?

Exactly: In a precise or accurate manner. That's what I was thinking: This means you had the same idea as someone else.

Which is more formal: Exactly and That's what I was thinking?

Exactly is the most formal of these.

Which is more common: Exactly and That's what I was thinking?

Exactly is the most common in everyday English.

Can you show an example of each?

Exactly: The instructions say to follow the recipe exactly for the best results. That's what I was thinking: When she suggested pizza for dinner, I said, 'That's what I was thinking.'

Can I use Exactly and That's what I was thinking interchangeably?

Not always. Exactly and That's what I was thinking 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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