He's building up a network of acquaintances outside his office.
acquaintances
I came to know the man who is now my husband through email; from an acquaintanceship started in that odd way before a month had passed we found ourselves resolving to get married.
acquaintances
Mr White and I are not friends, only acquaintances.
acquaintances
My business acquaintances know this number.
acquaintances
She had plenty of acquaintances but no friends.
acquaintances
She had plenty of acquaintances, but no friends.
acquaintances
That topic is too intimate to share with casual acquaintances.
[ワンぎり;ワンギリ, wan giri ; wangiri] (n) one mobile telephone ring (used by companies, usually sex-related, to register a phone number on a mobile in the hope people will return the call. Also used between acquaintances when swapping telephone numbers, or to get another person to call oneself)