adj 1  :  lacking perfect symmetry of form  :  not straight, smooth, even, or regular < teeth>   2 a  :  lacking continuity or regularity of occurrence, activity, or function < breathing>   b  of a physiological function  :  failing to occur at regular or normal intervals < menstruation>  <have your bowels been >   c  of an individual  :  failing to defecate at regular or normal intervals <was constipated and very >  ir*reg*u*lar*ly adv 
 
 
 
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