sign in - definition and synonyms

phrasal verb
present tense
I/you/we/theysign in
he/she/itsigns in
present participlesigning in
past tensesigned in
past participlesigned in
  1. 1
    [intransitive/transitive] to write your name on an official list when you arrive at a place

    All visitors must sign in at the front desk.

    sign someone in:

    He’s signed you in and is waiting for you inside.

  2. 2
    [transitive] if you sign in something that you have borrowed, you write your name on an official list to show that you have returned it
See also main entry: sign