(n.) The state or quality of being irregular; that which is irregular.

Bohemianism aberrance aberrancy aberration abnormality abnormity affability amorphism anamorphism anamorphosis anomalism anomalousness anomaly asperity asymmetry broken thread brokenness buckle bumpiness capriciousness cardialgia casualness changeability changeableness cholera morbus choppiness colic common touch conceit constipation contortion contrariety cordiality costiveness crackpotism cragginess crank crankiness crankism crookedness crotchet crotchetiness dappleness derangement desultoriness detorsion deviability deviancy deviation diarrhea difference differentiation differentness disarrangement disarray disarticulation discomfiture discomposure disconcertedness disconnectedness disconnection discontinuance discontinuation discontinuity discontinuousness discreteness disequilibrium disharmony dishevelment disintegration disjunction disorder disorderliness disorganization disparity disproportion disruption distortion disturbance divarication divergence diversification dottiness dysentery dyspepsia ease easiness easygoingness eccentricity entropy episode erraticism erraticness familiarity fickleness fitfulness flightiness flux folksiness freakiness freakishness gnarl graciousness granulation gripe gripes haphazardness harshness heartburn heterogeneity heteromorphism hispidity homeliness homeyness idiocrasy idiosyncrasy imbalance impulsiveness inadequacy incoherence incompleteness inconsistency inconstancy indigestion indiscriminateness inequality inequity inferiority informality informalness inharmonious harmony injustice instability insufficiency intermittence jaggedness jerkiness joltiness kink knot lientery looseness lopsidedness maggot mannerism mercuriality monstrosity moodiness most admired disorder motleyness mutability naturalness non sequitur nonconformism nonconformity noncontinuance nonlinearity nonseriality nonstandardization nonsymmetry nonuniformity obstipation oddity odds offhandedness overbalance parenthesis peculiarity perturbation plainness pluralism promiscuity promiscuousness pyrosis queerness quip quirk quirkiness raggedness randomness relaxedness restlessness rough air roughness ruggedness rugosity scraggliness screw shiftiness shortcoming simplicity singularity sociability strangeness subnormality superiority teratism tooth torsion tortuosity trick trots turbulence turn twist unaffectedness unbalance unceremoniousness uncertainty unconformism unconformity unconstrainedness unconstraint unconventionality undependability unevenness unfair discrimination unfixedness unnaturalism unnaturalness unorthodoxy unpredictability unpretentiousness unreliability unsettledness unsmoothness unstableness unsteadfastness unsteadiness unsymmetry ununiformity upset variability variation variegation variety variousness versatility wantonness warp wavering waywardness whim whimsicality whimsy wrench wrest wring