Consequently vs Thereby

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

Consequently

Top 3,000 (common)B2adverb

Thereby

FormalBeyond 10,000 (less common)C1adverb
Most formal: TherebyMost common: Consequently
 ConsequentlyThereby
Pronunciation🇬🇧 /["/ˈkɒnsɪkwəntli/"]/🇺🇸 /["/ˈkɑːnsɪkwentli/"]/🇬🇧 /["/ˌðeəˈbaɪ/"]/🇺🇸 /["/ˌðerˈbaɪ/"]/
MeaningAs a result or effect of something.in that way; as a result
ExampleThis poses a threat to agriculture and the food chain, and consequently to human health.Regular exercise strengthens the heart, thereby reducing the risk of heart attack.
RegisterNeutralFormal
How commonTop 3,000 (common)Beyond 10,000 (less common)
CEFR levelB2C1
Part of speechadverbadverb
Collocationsconsequently, the outcome, consequently, we decided, used consequently in a sentence, consequently, it appears, the plan failed; consequentlythereby improving, thereby increasing, thereby allowing
Antonymsinconsequently, independently, unrelatedlyindirectly, without effect, in no way
Common mistakesUsing 'consequently' in informal spoken English too often., Confusing 'consequently' with 'consequent' — the former is an adverb, the latter is an adjective., Placing 'consequently' at the beginning of a sentence without a clear prior context.Using 'thereby' in informal speech when it's not appropriate., Confusing 'thereby' with 'therefor', which has a different meaning., Neglecting to pair 'thereby' with a gerund.
Usage notesUse 'consequently' to show a direct result of something previously mentioned. It's suitable for writing and formal speech, but less common in everyday conversations.Use 'thereby' in formal writing to indicate the result of an action. It's less common in everyday conversation and may sound overly formal.

Frequently asked questions: Consequently vs Thereby

What's the difference between Consequently and Thereby?

Consequently: As a result or effect of something. Thereby: in that way; as a result

Which is more formal: Consequently and Thereby?

Thereby is the most formal of these.

Which is more common: Consequently and Thereby?

Consequently is the most common in everyday English.

Are Consequently and Thereby the same CEFR level?

Consequently: B2, Thereby: C1 on the CEFR scale.

Can I use Consequently and Thereby interchangeably?

Not always. Consequently and Thereby 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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