Begin vs Commence vs Initiate vs Launch vs Start

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

Begin

Top 1,000 (very common)A1verb

Commence

FormalTop 3,000 (common)C1verb

Initiate

Top 2,000 (common)C1verb

Launch

Top 1,000 (very common)B2verb

Start

Top 1,000 (very common)A1verb
Most formal: Commence
 BeginCommenceInitiateLaunchStart
Pronunciation🇬🇧 /["/bɪˈɡɪn/","/bɪˈɡɪnz/","/bɪˈɡæn/","/bɪˈɡʌn/","/bɪˈɡɪnɪŋ/"]/🇺🇸 /["/bɪˈɡɪn/","/bɪˈɡɪnz/","/bɪˈɡæn/","/bɪˈɡʌn/","/bɪˈɡɪnɪŋ/"]/🇬🇧 //kəˈmɛns//🇺🇸 //kəˈmɛns//🇬🇧 /["/ɪˈnɪʃieɪt/","/ɪˈnɪʃieɪts/","/ɪˈnɪʃieɪtɪd/","/ɪˈnɪʃieɪtɪŋ/"]/🇺🇸 /["/ɪˈnɪʃieɪt/","/ɪˈnɪʃieɪts/","/ɪˈnɪʃieɪtɪd/","/ɪˈnɪʃieɪtɪŋ/"]/🇬🇧 /["/lɔːntʃ/","/ˈlɔːntʃɪz/","/lɔːntʃt/","/ˈlɔːntʃɪŋ/"]/🇺🇸 /["/lɔːntʃ/","/ˈlɔːntʃɪz/","/lɔːntʃt/","/ˈlɔːntʃɪŋ/"]/🇬🇧 /["/stɑːt/","/stɑːts/","/ˈstɑːtɪd/","/ˈstɑːtɪŋ/"]/🇺🇸 /["/stɑːrt/","/stɑːrts/","/ˈstɑːrtɪd/","/ˈstɑːrtɪŋ/"]/
MeaningTo start something.To start or begin something.To start something.To start or send something, especially into the air or space.To begin something
ExampleI will begin my homework after dinner.The ceremony will commence at noon.to initiate legal proceedings against somebodyThe company plans to launch a new product next month.Please start the engine before we leave.
RegisterNeutralFormalNeutralNeutralNeutral
How commonTop 1,000 (very common)Top 3,000 (common)Top 2,000 (common)Top 1,000 (very common)Top 1,000 (very common)
CEFR levelA1C1C1B2A1
Part of speechverbverbverbverbverb
Collocationsagain, all over again, anew, be due to, be expected to, be scheduled to, by, with, begin at the beginning, be just beginning, be only beginning, again, all over again, anew, be due to, be expected to, be scheduled to, by, with, begin at the beginning, be just beginning, be only beginningcommence operations, commence proceedings, commence studiesformally, immediately, recentlylaunch a product, launch a campaign, launch into space, launch an initiative, launch a websitesuddenly, immediately, just, decide to, expect to, hope to, as, by, from, get (somebody/​something) started, a good, great, etc. place to start, let’s start, suddenly, immediately, just, decide to, expect to, hope to, as, by, from, get (somebody/​something) started, a good, great, etc. place to start, let’s start
Antonymsend, finish, concludecease, stop, endterminate, end, ceaseland, withdraw, ceasestop, finish, end
Common mistakesConfusing 'begin' with 'start' in casual contexts., Incorrectly using it without an object, e.g., 'I will begin.' instead of 'I will begin the project.', Using 'began' instead of 'begin' in present tense situations.Used incorrectly in informal contexts where simpler 'start' would be better., Confused with 'committed' due to similar sounds., Often misspelled as 'comence'.Confused with 'initiation' which is the process of starting something., Using it in informal settings where simpler words like 'start' are preferred., Forgetting to use an object after 'initiate', such as 'initiate a project.'Confused with 'lunche' as in a meal., Used incorrectly as a noun when referring to a launch event., Mispronounced or pronounced as 'lunch' instead of 'launch'.Confused with 'begin' — both mean similar things but are used in slightly different contexts., Used as a noun incorrectly — 'start' is mainly a verb., Misplaced in phrasal verbs — it should not be confused with 'start up' in business contexts.
Usage notesUse 'begin' in most contexts, both spoken and written. It’s appropriate for formal situations but can also be used informally. Avoid using in very casual contexts where a simpler word like 'start' may be better.Used in formal writing and speeches. It's less common in everyday conversation. Often used in legal and professional contexts.Use 'initiate' in contexts where a formal or official start is needed, like in business or academic settings. It may feel too formal in casual conversations.Use 'launch' in a business or technological context to describe starting a project or product. It's also appropriate when sending rockets or ships. Avoid using it in overly casual situations.Use 'start' for beginning actions or events. It's appropriate in both speaking and writing, but in formal contexts, you might use 'initiate' instead.

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Commence

Frequently asked questions: Begin vs Commence vs Initiate vs Launch vs Start

What's the difference between Begin, Commence, Initiate, Launch, and Start?

Begin: To start something. Commence: To start or begin something. Initiate: To start something. Launch: To start or send something, especially into the air or space. Start: To begin something

Which is more formal: Begin, Commence, Initiate, Launch, and Start?

Commence is the most formal of these.

Are Begin, Commence, Initiate, Launch, and Start the same CEFR level?

Begin: A1, Commence: C1, Initiate: C1, Launch: B2, Start: A1 on the CEFR scale.

What part of speech are Begin, Commence, Initiate, Launch, and Start?

Begin: verb, Commence: verb, Initiate: verb, Launch: verb, Start: verb.

Can you show an example of each?

Begin: I will begin my homework after dinner. Commence: The ceremony will commence at noon. Initiate: to initiate legal proceedings against somebody Launch: The company plans to launch a new product next month. Start: Please start the engine before we leave.

Can I use Begin, Commence, Initiate, Launch, and Start interchangeably?

Not always. Begin, Commence, Initiate, Launch, and Start 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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