Commitment vs Dedication vs Obligation 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

Obligation

Top 2,000 (common)B2noun

Promise

Top 1,000 (very common)A2verb
 CommitmentDedicationObligationPromise
Pronunciation🇬🇧 /["/kəˈmɪtmənt/"]/🇺🇸 /["/kəˈmɪtmənt/"]/🇬🇧 /["/ˌdedɪˈkeɪʃn/"]/🇺🇸 /["/ˌdedɪˈkeɪʃn/"]/🇬🇧 /["/ˌɒblɪˈɡeɪʃn/"]/🇺🇸 /["/ˌɑːblɪˈɡeɪʃn/"]/🇬🇧 /["/ˈprɒmɪs/","/ˈprɒmɪsɪz/","/ˈprɒmɪst/","/ˈprɒmɪsɪŋ/"]/🇺🇸 /["/ˈprɑːmɪs/","/ˈprɑːmɪsɪz/","/ˈprɑːmɪst/","/ˈprɑːmɪsɪŋ/"]/
MeaningA promise to do something or stay loyal.Being committed to a task or purpose.Something you must do; a duty or responsibility.A commitment to do something or not do something.
ExampleHis commitment to the project ensured its success.hard work and dedicationShe felt a strong obligation to help her friends in need.I promise to help you with your homework.
RegisterNeutralNeutralNeutralNeutral
How commonTop 2,000 (common)Top 1,000 (very common)Top 2,000 (common)Top 1,000 (very common)
CEFR levelB2C1B2A2
Part of speechnounnounnounverb
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 tocontractual, legal, statutory, carry out, discharge, fulfil/​fulfill, arise from something, under an obligation, without obligation, obligation of, contractual, legal, statutory, carry out, discharge, fulfil/​fulfill, arise from something, under an obligation, without obligation, obligation offaithfully, solemnly, initially, can, cannot, seem to, to, as promised, I can’t promise anything
Antonymsdisloyalty, indifferenceindifference, apathy, disinterestfreedom, option, choicelie, 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 'obligated' — remember 'obligation' is the noun., Using 'obligation' with incorrect prepositions — typically used with 'to' (e.g., obligation to pay)., Overusing in casual speech — more common in formal contexts.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.Use 'obligation' in both formal and informal contexts when discussing responsibilities or duties. It's appropriate in legal, academic, or personal situations but less common 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.

Frequently asked questions: Commitment vs Dedication vs Obligation vs Promise

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

Commitment: A promise to do something or stay loyal. Dedication: Being committed to a task or purpose. Obligation: Something you must do; a duty or responsibility. Promise: A commitment to do something or not do something.

Which is more advanced: Commitment, Dedication, Obligation, and Promise?

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

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

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

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

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

Can you show an example of each?

Commitment: His commitment to the project ensured its success. Dedication: hard work and dedication Obligation: She felt a strong obligation to help her friends in need. Promise: I promise to help you with your homework.

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

Not always. Commitment, Dedication, Obligation, 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.

Related comparisons