1 variation, difference, disparity, discrepancy, disagreement, deviation, inconsistency, divergence, incongruity:
The monitor takes account of minute variance in blood pressure.
2 disagreement, misunderstanding, discord, difference (of opinion), dissension, contention, dispute, dissent, controversy, quarrel, conflict, argument, debate, lack of harmony, falling out, schism, rift:
There has never been any variance between us about the disciplining of the children.
3 at variance. in dispute, in disagreement, quarrelling, in contention, in conflict:
The workforce was at variance with management in the matter of day care.