Boost vs Cheer up

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

Boost

Top 1,000 (very common)B2verb

Cheer up

Top 2,000 (common)
Most common: Boost
 BoostCheer up
Pronunciation🇬🇧 /["/buːst/","/buːsts/","/ˈbuːstɪd/","/ˈbuːstɪŋ/"]/🇺🇸 /["/buːst/","/buːsts/","/ˈbuːstɪd/","/ˈbuːstɪŋ/"]/🇬🇧 //tʃɪə r ʌp//🇺🇸 //tʃɪr ʌp//
Meaningto increase or improve somethingTo make someone feel happier.
Exampleto boost exports/profitsHe tried to cheer her up after the bad news.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR levelB2-
Part of speechverb
Collocationsconsiderably, dramatically, greatly, help (to), tocheer someone up, cheer up mood, cheer up friends
Antonymsdecrease, diminish, reducedepress, sadden, dismay
Common mistakesConfused with 'boast' – they have different meanings., Using 'boost' with uncountable nouns incorrectly., Confusing transitive use of 'boost' with intransitive.Using it without an object, e.g., saying 'Cheer up!' without context., Confusing it with 'cheer' which is more about applauding., Incorrectly using it as a command without knowing the person's feelings.
Usage notesUsed in various contexts, such as improving performance or enhancing qualities. Avoid in highly formal contexts.Use when trying to lift someone's spirits. Avoid in serious or formal situations.

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Cheer up

Frequently asked questions: Boost vs Cheer up

What's the difference between Boost and Cheer up?

Boost: to increase or improve something Cheer up: To make someone feel happier.

Which is more common: Boost and Cheer up?

Boost is the most common in everyday English.

Can you show an example of each?

Boost: to boost exports/profits Cheer up: He tried to cheer her up after the bad news.

Can I use Boost and Cheer up interchangeably?

Not always. Boost and Cheer up 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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