Irregular \Ir*reg"u*lar\, a. [Pref. ir- not + regular: cf. F.
   irr['e]gulier.]
   Not regular; not conforming to a law, method, or usage
   recognized as the general rule; not according to common form;
   not conformable to nature, to the rules of moral rectitude,
   or to established principles; not normal; unnatural;
   immethodical; unsymmetrical; erratic; no straight; not
   uniform; as, an irregular line; an irregular figure; an
   irregular verse; an irregular physician; an irregular
   proceeding; irregular motion; irregular conduct, etc. Cf.
   {Regular}.
   
[1913 Webster]


         Mazes intricate,
         Eccentric, intervolved, yet regular
         Then most when most irregular they seem. --Milton.
   
[1913 Webster]


         Leading the men of Herefordshire to fight
         Against the irregular and wild Glendower. --Shak.
   
[1913 Webster]


         A flowery meadow through which a clear stream murmured
         in many irregular meanders.              --Jones.

   Syn: Immethodical; unsystematic; abnormal; unnatural;
        anomalous; erratic; devious; crooked; eccentric;
        unsettled; uneven; variable; changeable; mutable;
        desultory; disorderly; wild; immoderate; intemperate;
        inordinate; vicious.
        
[1913 Webster]

Irregular \Ir*reg"u*lar\, n.
   One who is not regular; especially, a soldier not in regular
   service.
   
[1913 Webster]