Maintain vs Sustain vs You keep this live

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

Maintain

Top 2,000 (common)B2verb

Sustain

Top 2,000 (common)C1verb

You keep this live

Beyond 10,000 (less common)
 MaintainSustainYou keep this live
Pronunciation🇬🇧 //meɪnˈteɪn//🇺🇸 //meɪnˈteɪn//🇬🇧 /["/səˈsteɪn/","/səˈsteɪnz/","/səˈsteɪnd/","/səˈsteɪnɪŋ/"]/🇺🇸 /["/səˈsteɪn/","/səˈsteɪnz/","/səˈsteɪnd/","/səˈsteɪnɪŋ/"]/🇬🇧 //juː kiːp ðɪs laɪv//🇺🇸 //juː kiːp ðɪs laɪv//
MeaningTo keep something in good condition or continue to have it.To keep something going or maintain it.You maintain this situation or event as current or exciting.
ExampleTo maintain a healthy lifestyle, you should exercise regularly.We must find ways to sustain our natural resources for the future.If you want the audience engaged, you need to keep this live.
RegisterNeutralNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)Beyond 10,000 (less common)
CEFR levelB2C1-
Part of speechverbverb
Collocationsmaintain order, maintain balance, maintain standards, maintain equipmentno longer, barely, indefinitely, be able to, can, be unable tokeep this exciting, keep the energy, keep it fresh
Antonymsneglect, abandon, discontinueneglect, abandon, cease-
Common mistakesConfused with 'mainten' which is not a word., Using 'maintain' with uncountable nouns incorrectly., Omitting the object when using it in a sentence.'Sustain' is often confused with 'sustained' as a past form., Learners sometimes forget to add an object after 'sustain'., 'Sustain' is misused when referring to temporary situations, instead of ongoing support.Misusing 'keep', saying 'keep this alive' when 'live' is intended., Confusing 'keep this live' with 'live this', which changes the meaning., Forgetting to use 'this' appropriately with 'live'.
Usage notesUsed in contexts involving care, upkeep, or support. Appropriate in both spoken and written English but varies from technical discussions to daily conversation.Use 'sustain' in contexts about keeping something alive or supporting it over time. It can be formal when discussing topics like environmental issues or less formal in conversations about personal interests.Use 'keep this live' when discussing events or situations that need to maintain excitement or relevance. It's informal, so avoid in formal writing.

See it in real clips

Maintain
Sustain
You keep this live

Frequently asked questions: Maintain vs Sustain vs You keep this live

What's the difference between Maintain, Sustain, and You keep this live?

Maintain: To keep something in good condition or continue to have it. Sustain: To keep something going or maintain it. You keep this live: You maintain this situation or event as current or exciting.

Which is more advanced: Maintain, Sustain, and You keep this live?

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

Can you show an example of each?

Maintain: To maintain a healthy lifestyle, you should exercise regularly. Sustain: We must find ways to sustain our natural resources for the future. You keep this live: If you want the audience engaged, you need to keep this live.

Can I use Maintain, Sustain, and You keep this live interchangeably?

Not always. Maintain, Sustain, and You keep this live 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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