As things heat up vs Increase

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

As things heat up

InformalTop 2,000 (common)

Increase

Top 1,000 (very common)A2verb
Most formal: IncreaseMost common: Increase
 As things heat upIncrease
Pronunciation🇬🇧 //əz θɪŋz hiːt ʌp//🇺🇸 //əz θɪŋz hiːt ʌp//🇬🇧 /["/ɪnˈkriːs/","/ɪnˈkriːsɪz/","/ɪnˈkriːst/","/ɪnˈkriːsɪŋ/"]/🇺🇸 /["/ɪnˈkriːs/","/ɪnˈkriːsɪz/","/ɪnˈkriːst/","/ɪnˈkriːsɪŋ/"]/
MeaningWhen situations become more intense or serious.To make something larger in amount or size.
ExampleAs things heat up, the competition became fiercer.We need to increase our budget for the project.
RegisterInformalNeutral
How commonTop 2,000 (common)Top 1,000 (very common)
CEFR level-A2
Part of speechverb
Collocationsas things heat up, when things heat up, things heat up quickly, prepare for heat up, welcome the heat upconsiderably, dramatically, drastically, be expected to, be likely to, by, from, in
Antonyms-decrease, reduce, diminish
Common mistakesIncorrectly translated as 'things get hot' literally., Used too seriously in lighthearted contexts., Confusing it with 'heat up' as in cooking.Using 'increases' as a noun instead of a verb., Confusing 'increase' with 'decrease' which has the opposite meaning., Incorrectly forming the past tense as 'increased' when it should be 'increased' without a change.
Usage notesUse in casual conversations, often when discussing relationships or competitions. Avoid in formal writing.Use 'increase' in contexts involving growth, improvement, or enhancement. It is appropriate for both spoken and written English, but avoid in overly casual conversations where simpler words like 'go up' might be preferred.

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As things heat up

Frequently asked questions: As things heat up vs Increase

What's the difference between As things heat up and Increase?

As things heat up: When situations become more intense or serious. Increase: To make something larger in amount or size.

Which is more formal: As things heat up and Increase?

Increase is the most formal of these.

Which is more common: As things heat up and Increase?

Increase is the most common in everyday English.

Can you show an example of each?

As things heat up: As things heat up, the competition became fiercer. Increase: We need to increase our budget for the project.

Can I use As things heat up and Increase interchangeably?

Not always. As things heat up and Increase 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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