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When we have a button on a website for creating an account, should it say "sign up" or "signup"?

I see "sign up" in most places, but which is the correct one?

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I have never seen 'signup'; could you provide a link to a place where it appears? – user19148 Jun 20 '12 at 20:31
I really meant 'sign up', fixed it. – Haralan Dobrev Jun 20 '12 at 20:32
See also: notaverb.com/signup – Salman Abbas Jul 11 '15 at 21:51
up vote 56 down vote accepted

It should be sign up, as that is the verb form (see definition 30). Signup (or sign-up) is a noun.

That pattern usually holds: log in (verb) vs. login (noun), sit up (verb) vs. situp (noun), etc.

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Sounds legit :) – Haralan Dobrev Jun 20 '12 at 20:31
or maybe leg it :D – Lipis Jan 31 '14 at 17:30
@Lipis :D Nice try :) – Haralan Dobrev Jan 31 '14 at 22:31
@Lipis just created an account only to give you an upvote lol – schlimpf Oct 22 '15 at 7:31

protected by RegDwigнt Mar 7 '14 at 12:52

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