Cool MateCommitment vs Obligation vs Pledge vs Promise
When to use each in English, with meaning, register, and examples.
Commitment
Obligation
Pledge
Promise
| Commitment | Obligation | Pledge | Promise | |
|---|---|---|---|---|
| Pronunciation | 🇬🇧 /["/kəˈmɪtmənt/"]/🇺🇸 /["/kəˈmɪtmənt/"]/ | 🇬🇧 /["/ˌɒblɪˈɡeɪʃn/"]/🇺🇸 /["/ˌɑːblɪˈɡeɪʃn/"]/ | 🇬🇧 //plɛdʒ//🇺🇸 //plɛdʒ// | 🇬🇧 /["/ˈprɒmɪs/","/ˈprɒmɪsɪz/","/ˈprɒmɪst/","/ˈprɒmɪsɪŋ/"]/🇺🇸 /["/ˈprɑːmɪs/","/ˈprɑːmɪsɪz/","/ˈprɑːmɪst/","/ˈprɑːmɪsɪŋ/"]/ |
| Meaning | A promise to do something or stay loyal. | Something you must do; a duty or responsibility. | To make a serious promise or commitment. | A commitment to do something or not do something. |
| Example | His commitment to the project ensured its success. | She felt a strong obligation to help her friends in need. | She decided to pledge her support to the charity event. | I promise to help you with your homework. |
| Register | Neutral | Neutral | Formal | Neutral |
| How common | Top 2,000 (common) | Top 2,000 (common) | Top 2,000 (common) | Top 1,000 (very common) |
| CEFR level | B2 | B2 | C1 | A2 |
| Part of speech | noun | noun | verb | verb |
| Collocations | absolute, 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 of | contractual, 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 of | pledge allegiance, pledge support, pledge a donation | faithfully, solemnly, initially, can, cannot, seem to, to, as promised, I can’t promise anything |
| Antonyms | disloyalty, indifference | freedom, option, choice | renounce, disavow, withdraw | lie, break, betray |
| Common mistakes | Using 'commitment' without specifying what it's to., Confusing 'commitment' with 'commit' as a verb., 'Commitment' often misused in informal contexts. | 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. | 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 notes | Used when discussing promises or obligations in personal or professional contexts. It's generally appropriate in serious discussions and may not fit casual chatting. | 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. | 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. |
Frequently asked questions: Commitment vs Obligation vs Pledge vs Promise
What's the difference between Commitment, Obligation, Pledge, and Promise?
Commitment: A promise to do something or stay loyal. Obligation: Something you must do; a duty or responsibility. Pledge: To make a serious promise or commitment. Promise: A commitment to do something or not do something.
Which is more formal: Commitment, Obligation, Pledge, and Promise?
Pledge is the most formal of these.
Which is more common: Commitment, Obligation, Pledge, and Promise?
Promise is the most common in everyday English.
Which is more advanced: Commitment, Obligation, Pledge, and Promise?
Pledge is the highest level, at C1, on the CEFR scale.
Are Commitment, Obligation, Pledge, and Promise the same CEFR level?
Commitment: B2, Obligation: B2, Pledge: C1, Promise: A2 on the CEFR scale.
What part of speech are Commitment, Obligation, Pledge, and Promise?
Commitment: noun, Obligation: noun, Pledge: verb, Promise: verb.
Can you show an example of each?
Commitment: His commitment to the project ensured its success. Obligation: She felt a strong obligation to help her friends in need. Pledge: She decided to pledge her support to the charity event. Promise: I promise to help you with your homework.
Can I use Commitment, Obligation, Pledge, and Promise interchangeably?
Not always. Commitment, Obligation, 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.