There are 2 main definitions of sign up in English:

sign up1

1Commit oneself to a period of employment, education, or in the armed forces: he signed up for a ten-week course
More example sentences
  • To what exactly did they think they were committing themselves when they signed up for the job?
  • She signed up for four movies under prestigious banners, even before a single release!
  • Instead of doing sporty things, I signed up for a class on willow weaving.
1.1 (also sign something up) Conclude a business deal: the firm has signed up with a new Russian company
More example sentences
  • There is still some way to go before the deal is signed up and even then it may take some time for any money to be released.
  • ABL has been operating the centre on behalf of the Council for seven years since it opened but will go it alone as soon as the deal is signed up.
  • However, those visiting the slopes of Bulgaria will not be covered by the card, as that country is not signed up to the free treatment deal.
See parent entry: sign

Definition of sign up in:

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There are 2 main definitions of sign up in English:

sign-up2

Line breaks: sign-up

noun

[mass noun, usually as modifier]
The action of enrolling for something or of enrolling or employing someone: a sign-up fee of £29.95
More example sentences
  • However, the deadline for his initial sign-up fee of £3,370 is now only weeks away and Jason is now appealing for help.
  • The new technology does not require software installs, software downloads or any kind of sign-up fees.
  • Among suggestions from both surfers and authorities are fees, sign-up times, or even a lottery system for permits.

Definition of sign up in: