Dictionary definition · irregular
noun
- a member of an irregular armed force that fights a stronger force by sabotage and harassment
- merchandise that has imperfections; usually sold at a reduced price without the brand name
adjective
- contrary to rule or accepted order or general practice"irregular hiring practices"
- not occurring at a regular rate or fixed intervals"an irregular heartbeat"
- (used of the military) not belonging to or engaged in by regular army forces"irregular troops"
- (of solids) not having clear dimensions that can be measured; volume must be determined with the principle of liquid displacement
- failing to meet a standard of manufacture due to an imperfection"an irregular pair of jeans"
- deviating from normal expectations; somewhat odd, strange, or abnormal"these days large families are atypical"
- lacking continuity or regularity"an irregular worker"
- (of a surface or shape); not level or flat or symmetrical"walking was difficult on the irregular cobblestoned surface"
- independent in behavior or thought"she led a somewhat irregular private life"
Source: Open English WordNet (CC BY 4.0).