aberration

noun

1 economists said the figure was an aberration:

anomaly, deviation, divergence, abnormality, irregularity, variation, digression, edge case, freak, rogue, rarity, quirk, oddity, curiosity, mistake.

2 it is possible that, in a moment of aberration, the parent may strike the child:

abnormality, irregularity, eccentricity, deviation, transgression, straying, lapse, aberrancy.

3 the experience might have been no more than a temporary aberration of an exhausted mind:

disorder, defect, disease, irregularity, instability, derangement, vagary.