Crossword Clue:

the state or condition of being syntonic

AnswerCrossword Clue
FETTLEState or condition, usually fine.
SENDDrive into some state or condition.
NORMALCYState of being regular or common
UBIETYThe condition of being in a certain place
ERRANCYThe state of being wrong.
SONANCEThe state of being voiced.
ONTRIALIn the state of being tested.