is similar to
irregular in shape or outline
"asymmetrical features"; "a dress with a crooked hemline"
is similar to
occurring from time to time
"casual employment"; "a casual correspondence with a former teacher"; "an occasional worker"
is similar to
not conforming to legality, moral law, or social convention
"an unconventional marriage"; "improper banking practices"
is similar to
set up or distributed in a deliberately random way
is similar to
of verbs not having standard (or regular) inflection
"`sing' is a strong verb"
see also
prohibited by law or by official or accepted rules
"an illegal chess move"
see also
not rhythmic; irregular in beat or accent
see also
having or caused by an irregular surface
"trees with rough bark"; "rough ground"; "rough skin"; "rough blankets"; "his unsmooth face"
see also
subject to change or variation
"her unsteady walk"; "his hand was unsteady as he poured the wine"; "an unsteady voice"
see also
characterized by asymmetry in the spatial arrangement or placement of parts or components
see also
lacking systematic arrangement or method or organization
"unsystematic and fragmentary records"; "he works in an unsystematic manner"
is an attribute of
the quality of being characterized by a fixed principle or rate
"he was famous for the regularity of his habits"