irregular
Independent in behavior or thought.
“she led a somewhat irregular private life”
(used of the military) not belonging to or engaged in by regular army forces.
“irregular troops”
“irregular warfare”
Not occurring at a regular rate or fixed intervals.
“an irregular heartbeat”
Deviating from normal expectations; somewhat odd, strange, or abnormal.
“highly irregular behavior”
Lacking continuity or regularity.
“an irregular worker”
Contrary to rule or accepted order or general practice.
“irregular hiring practices”
Failing to meet a standard of manufacture due to an imperfection.
“an irregular pair of jeans”
(of a surface or shape); not level or flat or symmetrical.
“walking was difficult on the irregular cobblestoned surface”
(of solids) not having clear dimensions that can be measured; volume must be determined with the principle of liquid displacement.
Merchandise that has imperfections; usually sold at a reduced price without the brand name.
A member of an irregular armed force that fights a stronger force by sabotage and harassment.