Which is correct?
a. log in
The general rule is that the verb phrase is two words while the noun or adjective form is the single compound word. So you log in to something — as long as you can remember your login info.
Here’s a list from The Chipmunk of Doom. Ignore at your own peril.
Verb form is the first example in each case:
- set up vs. setup
- make up vs. makeup
- work out vs. workout
- pick up vs. pickup
- get up vs. getup
- turn out vs. turnout
- log in vs. login
- turn over vs. turnover
See more examples and explanation here.
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