Commonly confused
Sign on vs Sign up
“Sign on” and “Sign up” look alike but pull in different directions. Here is the quick way to tell them apart — with examples, the mistake to avoid, and a check.
Which one do you mean?
Sign on means authenticate into a service. Sign up means officially register for a course, service or membership.
Sign on
Authenticate into a service
Sign up
Officially register for a course, service or membership
sign on
- 1
Authenticate into a service
Correct use
“Sign on with your work credentials.”
Enter your work login details to access the service.
sign up
- 1
Officially register for a course, service or membership
Correct use
“She signed up for yoga classes.”
She added her name to the list for yoga classes.
Test yourself
“Sign on with your work credentials.” What does it mean?
More pairs to tell apart
Sink In — iOS & Android
Stop mixing them up
Sink In turns confusable pairs like this into quick contrast drills, so the right particle becomes automatic instead of a guess.
- Learn the pattern behind dozens of verbs at once — not one-off translations.
- Spaced repetition (SM-2) brings each meaning back right before you forget.
- Four practice modes train recall and discrimination, not just recognition.
