Definition of know who's who in English:

know who's who


  • Be aware of the identity and status of each person.

    ‘Ensure that they know who's who and can identify company structure, individual roles and the existing communicative systems in use as soon as possible.’
    • ‘We're on a first-name basis with a lot of people and we know who's who in the community.’
    • ‘This invaluable data base will be expanded and updated, helping us - and the media - know who's who in the corporate-scientific complex.’
    • ‘Certainly, a reader who knows who's who in this story will appreciate the humor and ingenuity considerably more.’
    • ‘I loved my job and I was said to be very good at what I did, but I wasn't very good at that whole ‘knowing who's who in the corporate world’ thing.’
    • ‘The first thing we did when we got here was go around getting to know who's who before asking any questions.’
    • ‘It benefits every investor to know who's who behind that set of magnificent oak doors, as each of the employees in a securities firm affects the real returns of one's investment portfolio.’
    • ‘Writing about the public consultation over plans for the introduction of non-medically qualified surgical care practitioners, Mr Phillips says it is important that patients know who's who.’
    • ‘Now I like to think I know who's who, but I have to admit to having to ask who our ‘basket case’ was this month.’