Take the 2-minute tour ×  I said: "Tomorrow will be our one-to-
one meeting with Mr.XYZ."  My friend: "OK, one-on-one."  Which
is correct?     share|improve this question I'm not sure'our
one-[]-one meeting' would be strictly correct either way. – 
TimLymington Aug 20 '12 at 15:37 What @Tim said. You can't
meaningfully speak of our one-on/to-one meeting with A.N. Other,
since that would imply at least three people in the meeting (the
speaker, listener, and the other person). –  FumbleFingers Oct
22 '12 at 15:27 add comment  6 Answers  up vote 8 down vote
accepted   One-on-one is the correct adjective in your example.
See Free dictionary. One-on-one is used when there are two
people involved in mutual exchange, as happens in a meeting.
share|improve this answer One-to-one is also a computer science
term defining a relationship between two tables in a database in
which one record corresponds to exactly one record in the other
table and vice versa. –  Neil Apr 19 '12 at 14:09 @Neil That's
analogous to his Maths