Accordingly vs Consequently vs So vs Therefore

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

Accordingly

Top 5,000 (fairly common)C1adverb

Consequently

Top 3,000 (common)B2adverb

So

High-frequency chunkA1adverb

Therefore

FormalTop 2,000 (common)B1adverb
Most formal: ThereforeMost common: So
 AccordinglyConsequentlySoTherefore
Pronunciation🇬🇧 /["/əˈkɔːdɪŋli/"]/🇺🇸 /["/əˈkɔːrdɪŋli/"]/🇬🇧 /["/ˈkɒnsɪkwəntli/"]/🇺🇸 /["/ˈkɑːnsɪkwentli/"]/🇬🇧 /["/səʊ/"]/🇺🇸 /["/səʊ/"]/🇬🇧 /["/ˈðeəfɔː(r)/"]/🇺🇸 /["/ˈðerfɔːr/"]/
MeaningIn a way that is suitable or appropriate based on something else.As a result or effect of something.used to say that something is true or to show a resultFor that reason; as a result.
ExampleWe have to discover his plans and act accordingly.This poses a threat to agriculture and the food chain, and consequently to human health.She was tired, so she went to bed early.He's only 17 and therefore not eligible to vote.
RegisterNeutralNeutralNeutralFormal
How commonTop 5,000 (fairly common)Top 3,000 (common)High-frequency chunkTop 2,000 (common)
CEFR levelC1B2A1B1
Part of speechadverbadverbadverbadverb
Collocationsact accordingly, respond accordingly, adjust accordingly, plan accordingly, behave accordinglyconsequently, the outcome, consequently, we decided, used consequently in a sentence, consequently, it appears, the plan failed; consequentlyso happy, so much, so good, so far, so fasttherefore concluded, therefore it follows, therefore we can, therefore you should, therefore the result
Antonymsinappropriately, improperly, unsuitably, contrarilyinconsequently, independently, unrelatedlynothowever, nevertheless, nonetheless
Common mistakesUsing 'accordingly' in informal situations where simpler words would be better., Confusing 'accordingly' with 'according to', which has a different meaning., Omitting the necessary context before using 'accordingly'.Using '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.Confused with 'very' — 'so' indicates a result rather than degree., 'So' used incorrectly at the beginning of formal sentences., Overusing 'so' in formal writing, making the text less precise.'Therefore' is sometimes confused with 'therefor', which has a different meaning., Learners may use 'therefore' to start a sentence in informal contexts, which can sound awkward., 'Therefore' may be incorrectly placed in a sentence away from the cause or condition.
Usage notesUse 'accordingly' to show a result based on a previous statement. It's often found in written English and formal contexts but can also be used in speech.Use 'consequently' to show a direct result of something previously mentioned. It's suitable for writing and formal speech, but less common in everyday conversations.Used to connect sentences, showing cause and effect. In informal contexts, it can start statements or express agreement but may be considered vague in formal writing.Use 'therefore' to connect ideas in formal writing or speech. It’s less common in everyday conversation and can sound stiff. Avoid it in casual contexts.

Frequently asked questions: Accordingly vs Consequently vs So vs Therefore

What's the difference between Accordingly, Consequently, So, and Therefore?

Accordingly: In a way that is suitable or appropriate based on something else. Consequently: As a result or effect of something. So: used to say that something is true or to show a result Therefore: For that reason; as a result.

Which is more formal: Accordingly, Consequently, So, and Therefore?

Therefore is the most formal of these.

Which is more common: Accordingly, Consequently, So, and Therefore?

So is the most common in everyday English.

Which is more advanced: Accordingly, Consequently, So, and Therefore?

Accordingly is the highest level, at C1, on the CEFR scale.

Are Accordingly, Consequently, So, and Therefore the same CEFR level?

Accordingly: C1, Consequently: B2, So: A1, Therefore: B1 on the CEFR scale.

What part of speech are Accordingly, Consequently, So, and Therefore?

Accordingly: adverb, Consequently: adverb, So: adverb, Therefore: adverb.

Can you show an example of each?

Accordingly: We have to discover his plans and act accordingly. Consequently: This poses a threat to agriculture and the food chain, and consequently to human health. So: She was tired, so she went to bed early. Therefore: He's only 17 and therefore not eligible to vote.

Can I use Accordingly, Consequently, So, and Therefore interchangeably?

Not always. Accordingly, Consequently, So, and Therefore 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.