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How to Conjugate Sign In
- Infinitive: Sign In
- Present Tense: Sign In/ Signs In
- -ing Form: Signing In
- Past Tense: Signed In
- Past Participle: Signed In
Definitions of Sign In:
1. To write your name on a list to indicate the day and time you arrived at a certain place.
Examples: You must sign in when you arrive at the doctor’s office.
The receptionist asked the applicants to sign in upon arrival.
2. To enter your username and password online.
Examples: The page is showing an error message when I try to sign in with my username and password.
I can’t sign in my account because I forgot my password.
See our complete list of English phrasal verbs.