Definition of in tune
1
: in a state in which the correct musical sound is played or sung
- adjusted the guitar until it was in tune
2
: in a state in which people agree with or understand one another
- The president and his followers were clearly in tune.
- The new supervisor is not in tune with the needs of the staff.
3
: in a state in which one thing agrees with or matches another
—usually + with
- His formal clothing was in tune with the occasion.
