countersignature (noun) endorsement: support, authorization
Sinonime: aberrancy, aberration, anomalism, anomaly, atypicalness, bizarreness, deformity, deviance, deviancy,
deviation, eccentricity,
exception, extraordinariness,
flaw, irregularity, oddity, peculiarity, preternaturalness, singularity, strangeness, uncommonness, unnaturalness, unusualness, weirdness
Antonime: normality, normalness, sameness, standard