Sign In

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
Sign In is a separable phrasal verb and has 2 definitions.

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.