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start up

/ˌstɑːt ˈʌp/
IELTSAcademic
verb

To begin operating or to make a machine, engine, or company begin working. It can also mean to begin doing an activity.

  • The engine started up slowly.
  • They started up a new business last year.
  • She started up the computer and checked her email.
noun

A new company that is just beginning, especially one that is small and growing fast.

  • He works for a tech start-up.
  • Many start-ups fail in the first year.
  • The city supports young start-ups.

Adinary Nuance

Start up is broader than launch or open. Use it for machines beginning to work, and also for new businesses. For companies, start-up is a common noun; start up a company is the verb phrase.

In other languages

Vietnamese
khởi nghiệp
Spanish
empresa emergente
Chinese
初创公司
Japanese
スタートアップ
Korean
스타트업

Etymology

The phrasal verb comes from English start plus up, used from the 20th century. The noun start-up became common later for a new business.

Common phrases

start up a businessstart up the enginestart-up company

Synonyms

Related words

Frequently asked questions

Is start up one word or two?
As a verb phrase, it is usually two words: start up. As a noun, it is often hyphenated: start-up.
What is the difference between start up and launch?
Start up is broader. It can mean a machine begins working or a business begins. Launch is more often used for products, projects, or campaigns.
Is start-up formal or informal?
It is common in business English and neutral in tone. It is widely used in speaking and writing.
Can I say 'my company start up'?
No. Say 'my company is a start-up' or 'I am starting up a company.'