or one-on-one (wʌn ɒn wʌn)
adverb1. one to one
Talking one-on-one with people is not his idea of fun.
I was left one on one with the Major.
therapists who work one-on-one with patients
adjective2. denoting a relationship or encounter in which someone is involved with only one other person
It would be a one-on-one interview.
a one-on-one therapy session
I'm going to take him for some one-on-one coaching.