Entirely vs Thoroughly

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

Entirely

Top 2,000 (common)B2adverb

Thoroughly

Top 2,000 (common)B2adverb
 EntirelyThoroughly
Pronunciation🇬🇧 /["/ɪnˈtaɪəli/"]/🇺🇸 /["/ɪnˈtaɪərli/"]/🇬🇧 /["/ˈθʌrəli/"]/🇺🇸 /["/ˈθɜːrəli/"]/
MeaningCompletely or fully.In a detailed and complete way.
ExampleThe experience was **entirely new** to me.We thoroughly enjoyed ourselves.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)
CEFR levelB2B2
Part of speechadverbadverb
Collocationsentirely different, entirely possible, entirely subjectivethoroughly enjoy, thoroughly check, thoroughly understand, thoroughly investigate, thoroughly cleanse
Antonymspartially, incompletelysuperficially, partially, incompletely
Common mistakesConfused with 'entire' which is an adjective., Used incorrectly in informal contexts, such as in slang., Misplaced in a sentence, making it sound awkward.Using 'through' instead of 'thoroughly'., Confusing it with 'thorough', which is an adjective., Misplacing it in a sentence or using it in informal contexts.
Usage notesUsed to emphasize completeness. Suitable in both spoken and written contexts; however, avoid in overly casual conversations.Use this word to describe actions done completely and carefully. It's suitable in both speaking and writing. Avoid in casual conversations where simpler words like 'really' or 'very' may be more common.

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Entirely

Frequently asked questions: Entirely vs Thoroughly

What's the difference between Entirely and Thoroughly?

Entirely: Completely or fully. Thoroughly: In a detailed and complete way.

Are Entirely and Thoroughly the same CEFR level?

Entirely: B2, Thoroughly: B2 on the CEFR scale.

What part of speech are Entirely and Thoroughly?

Entirely: adverb, Thoroughly: adverb.

Can you show an example of each?

Entirely: The experience was **entirely new** to me. Thoroughly: We thoroughly enjoyed ourselves.

Can I use Entirely and Thoroughly interchangeably?

Not always. Entirely and Thoroughly 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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