Is sugar-crash a formal word?

No. It is informal and common in everyday speech.

What is the difference between sugar-crash and sugar rush?

A sugar rush is the quick energy boost first. A sugar-crash is the drop after that.

Can I use sugar-crash in business writing?

Usually no. Use 'energy drop' or 'feeling tired' instead.

← Dictionary

sugar-crash

/ˈʃʊɡ.ə ˌkræʃ/

IELTSAcademic

noun

A sudden tired, weak, or irritable feeling after eating a lot of sugar. It happens when your energy rises quickly, then drops.

I got a sugar-crash after that soda.
Too much cake gave me a sugar-crash.
She felt a sugar-crash in the afternoon.

Adinary Nuance

Sugar-crash is more specific than tired or sleepy. It suggests a quick drop in energy after sugary food or drink. People use it in casual speech, not formal medical writing. It is closer to a feeling than a diagnosis.

In other languages

Vietnamese: tụt năng lượng
Spanish: bajón de azúcar
Chinese: 糖分崩溃
Japanese: 砂糖切れ
Korean: 당 떨어짐

Etymology

Built from sugar and crash in modern English. It became common in everyday speech and health discussions in the late 20th century.

Common phrases

get a sugar-crashavoid a sugar-crashafternoon sugar-crash

Synonyms

energy crash crash slump

Frequently asked questions

Is sugar-crash a formal word?: No. It is informal and common in everyday speech.
What is the difference between sugar-crash and sugar rush?: A sugar rush is the quick energy boost first. A sugar-crash is the drop after that.
Can I use sugar-crash in business writing?: Usually no. Use 'energy drop' or 'feeling tired' instead.