· a member of an irregular armed force that fights a stronger force by sabotage and harassment

Synonym(s): guerrilla, guerilla, insurgent

Hypernym(s): warrior

· merchandise that has imperfections; usually sold at a reduced price without the brand name

Synonym(s): second

Hypernym(s): merchandise, ware, product

· contrary to rule or accepted order or general practice; "irregular hiring practices"

Antonym(s): regular

· not occurring at a regular rate or fixed intervals; "an irregular heartbeat"

Synonym(s): unpredictable

· (used of the military) not belonging to or engaged in by regular army forces; "irregular troops"; "irregular warfare"

Antonym(s): regular

· (of solids) not having clear dimensions that can be measured; volume must be determined with the principle of liquid displacement

Antonym(s): regular

· 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"; "atypical clinical findings"; "atypical pneumonia"; "highly irregular behavior"

Synonym(s): atypical

· lacking continuity or regularity; "an irregular worker"; "employed on a temporary basis"

Synonym(s): temporary

· (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"; "maverick politicians"

Synonym(s): maverick, unorthodox