Irregularity

roughness bumpiness jaggedness stop break uncertainty aberration shift change twist bump hump flaw imperfection dent hole variation variability spasm deviation inconsistency distortion asymmetry

peculiarity singularity anomaly abnormality strangeness uniqueness exception excess unorthodoxy malfunction malformation deviation dispensation allowance exemption privilege nonconformity unconformity innovation oddity eccentricity rarity looseness laxity characteristic quirk