Completely vs Through and through

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

Completely

Top 1,000 (very common)A2adverb

Through and through

Top 3,000 (common)
Most common: Completely
 CompletelyThrough and through
Pronunciation🇬🇧 /["/kəmˈpliːtli/"]/🇺🇸 /["/kəmˈpliːtli/"]/🇬🇧 //θruː ənd θruː//🇺🇸 //θru ənd θru//
MeaningTotally or fully.Completely; in every part.
ExampleI completely forgot about the meeting today.She is a dog lover through and through.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 3,000 (common)
CEFR levelA2-
Part of speechadverb
Collocationscompletely agree, completely understand, completely satisfied, completely different, completely unawareloyal through and through, honest through and through, committed through and through, passionate through and through, dedicated through and through
Antonymspartially, incompletely, somewhat-
Common mistakesUsing 'completely' without a verb or action., Confusing 'completely' with 'totally' in formal contexts., Saying 'completely' in casual situations where simpler words like 'really' might fit better.Used too literally instead of metaphorically., Confused with 'through' as a direction., Incorrectly worded as 'through and throughs'.
Usage notesUse 'completely' to emphasize the totality of an action or state. It's suitable for both spoken and written English but might sound overemphasized in casual conversation."Through and through" is often used in informal contexts to emphasize totality, such as in personality descriptions. It may not be appropriate in very formal writing.

See it in real clips

Completely
Through and through

Frequently asked questions: Completely vs Through and through

What's the difference between Completely and Through and through?

Completely: Totally or fully. Through and through: Completely; in every part.

Which is more common: Completely and Through and through?

Completely is the most common in everyday English.

Can you show an example of each?

Completely: I completely forgot about the meeting today. Through and through: She is a dog lover through and through.

Can I use Completely and Through and through interchangeably?

Not always. Completely and Through and through 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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