irregular

Synonyms: aberrant aimless capricious casual changeable designless desultory disconnected discontinuous eccentric erratic faltering fitful fluctuating fragmentary haphazard hit-or-miss inconstant indiscriminate infrequent intermittent jerky nonuniform occasional out of order patchy purposeless recurrent shaky shifting spasmodic sporadic uncertain unconsidered uneven unmethodical unpunctual unreliable unsettled unsteady unsystematic up and down weaving

Antonyms: conventional methodical regular systematic

Synonyms: aberrant anomalous atypical capricious deviant different disorderly divergent eccentric exceptional extraordinary immoderate improper inappropriate inordinate odd off-key queer quirky singular strange unconventional unique unnatural unofficial unorthodox unsuitable unusual

Antonyms: common conventional normal standard usual

Synonyms: aberrant amorphous asymmetrical bent broken cockeyed craggy crooked devious disproportionate eccentric elliptic elliptical hilly jagged lopsided lumpy meandering notched not uniform off-balance off-center out of proportion pitted protuberant rough scarred serrate serrated unaligned unbalanced unequal unsymmetrical variable wobbly zigzagged

Antonyms: even flat level smooth