Commitment vs Dedication vs Pledge vs Promise

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

Commitment

Top 2,000 (common)B2noun

Dedication

Top 1,000 (very common)C1noun

Pledge

FormalTop 2,000 (common)C1verb

Promise

Top 1,000 (very common)A2verb
Most formal: Pledge
 CommitmentDedicationPledgePromise
Pronunciation🇬🇧 /["/kəˈmɪtmənt/"]/🇺🇸 /["/kəˈmɪtmənt/"]/🇬🇧 /["/ˌdedɪˈkeɪʃn/"]/🇺🇸 /["/ˌdedɪˈkeɪʃn/"]/🇬🇧 //plɛdʒ//🇺🇸 //plɛdʒ//🇬🇧 /["/ˈprɒmɪs/","/ˈprɒmɪsɪz/","/ˈprɒmɪst/","/ˈprɒmɪsɪŋ/"]/🇺🇸 /["/ˈprɑːmɪs/","/ˈprɑːmɪsɪz/","/ˈprɑːmɪst/","/ˈprɑːmɪsɪŋ/"]/
MeaningA promise to do something or stay loyal.Being committed to a task or purpose.To make a serious promise or commitment.A commitment to do something or not do something.
ExampleHis commitment to the project ensured its success.hard work and dedicationShe decided to pledge her support to the charity event.I promise to help you with your homework.
RegisterNeutralNeutralFormalNeutral
How commonTop 2,000 (common)Top 1,000 (very common)Top 2,000 (common)Top 1,000 (very common)
CEFR levelB2C1C1A2
Part of speechnounnounverbverb
Collocationsabsolute, complete, full, degree, level, give, make, demonstrate, commitment on, commitment to, a lack of commitment, absolute, complete, full, degree, level, give, make, demonstrate, commitment on, commitment to, a lack of commitment, big, considerable, major, have, take on, fulfil/​fulfill, commitment on, heavy, time, commitment ofcomplete, total, great, have, demonstrate, show, dedication topledge allegiance, pledge support, pledge a donationfaithfully, solemnly, initially, can, cannot, seem to, to, as promised, I can’t promise anything
Antonymsdisloyalty, indifferenceindifference, apathy, disinterestrenounce, disavow, withdrawlie, break, betray
Common mistakesUsing 'commitment' without specifying what it's to., Confusing 'commitment' with 'commit' as a verb., 'Commitment' often misused in informal contexts.Confused with 'dedicate', which is a verb., Using 'dedication' without a specific subject, making it seem vague., Mixing up 'dedication' with 'devotion', thinking they mean the same.Confused with 'pledged' vs 'pledge' as different tenses., Omitting the object after the verb., Using 'pledge' when referring to a general promise instead of a formal commitment.Confusing 'promise' with 'vow' or 'pledge' in terms of strength., Using 'promise' without an object (e.g., 'I promise' should specify what)., Misusing in the past tense (e.g., 'I promised' without a follow-up).
Usage notesUsed when discussing promises or obligations in personal or professional contexts. It's generally appropriate in serious discussions and may not fit casual chatting.Use 'dedication' when discussing commitment to work, goals, or projects. It's appropriate in both personal and professional contexts but may sound too formal in casual conversations.Typically used in formal contexts, such as during ceremonies or official statements. Avoid in casual conversations.Use 'promise' when you want to express a vow or assurance. Common in both spoken and written contexts, but avoid in formal legal documents.

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Commitment
Dedication
Pledge
Promise

Frequently asked questions: Commitment vs Dedication vs Pledge vs Promise

What's the difference between Commitment, Dedication, Pledge, and Promise?

Commitment: A promise to do something or stay loyal. Dedication: Being committed to a task or purpose. Pledge: To make a serious promise or commitment. Promise: A commitment to do something or not do something.

Which is more formal: Commitment, Dedication, Pledge, and Promise?

Pledge is the most formal of these.

Are Commitment, Dedication, Pledge, and Promise the same CEFR level?

Commitment: B2, Dedication: C1, Pledge: C1, Promise: A2 on the CEFR scale.

What part of speech are Commitment, Dedication, Pledge, and Promise?

Commitment: noun, Dedication: noun, Pledge: verb, Promise: verb.

Can you show an example of each?

Commitment: His commitment to the project ensured its success. Dedication: hard work and dedication Pledge: She decided to pledge her support to the charity event. Promise: I promise to help you with your homework.

Can I use Commitment, Dedication, Pledge, and Promise interchangeably?

Not always. Commitment, Dedication, Pledge, and Promise 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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