- contrary to rule or accepted order or general practice; "irregular hiring practices"
- guerrilla: 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
- not occurring at expected times
- (used of the military) not belonging to or engaged in by regular army forces; "irregular troops"; "irregular warfare"
- (of solids) not having clear dimensions that can be measured; volume must be determined with the principle of liquid displacement
- (Irregulars) Irregular military refers to any non-standard military. Being defined by exclusion, there is significant variance in what comes under the term. It can refer to the type of military organization, or to the type of tactics used.
- A soldier who is not a member of an official military force and, often, does not follow regular army tactics; Nonstandard; not conforming to rules or expectations; Of a surface, rough
- (IRREGULARS) armed individuals and groups not members of the regular armed forces, police, or other internal security forces. If IRREGULARS are not in uniform during their periods of service, they may be summarily executed if captured [v: "free-shooters"]. ...
- (Irregulars) Any or all custom made match books that in some way are blemished and cannot be sold to the customer. (See Errors, Jobbers).
- (Irregulars) Hosiery that contains minor imperfections in dimensions, size, color or knit but without obvious mends, runs, breaks or substantial damage the fabric. Irregular stockings usually do not impair their wearing Quality.
- (irregulars) The Baker Street Irregulars is both the name of the principal Sherlock Holmes society and the street urchins Holmes employed.
- Supply and demand patterns vary noticeably from plant to plant or area to area.
- (Pertaining to a corolla) not all the petals of the same size and shape. Unequal. Not all similar.
- A serial publication issued at no fixed frequency.
- An irregular noun does not follow the usual plural rule. By the age of two or three, children learn to add -s. Before that, they treat all nouns as irregular. But even if they had been saying "mice," once they learn the plural rule they may begin saying "mouses" instead. ...
- not rounded in outline; may be either island oil glands (not connected to veinlets) or intersectional oil glands (connected to veinlets)
- Used to describe a calyx or corolla in which all parts are not alike. A rose is regular, a sweet pea is irregular.
- a tree having a non-conical, non-symmetrical shape with non-uniform branch lengths.
- A verb or noun that does not follow the normal patterns of conjugation or declension.
- [morphology] A form which can be regarded as an exception to a given pattern or rule, e.g. the plurals formed with a stem vowel change in Modern English, man : men, tooth : teeth.
- (ih-REG-u-lar) -- Said of a flower where a series of parts, e.g., petals, are not alike.
- A raster vertex attribute is irregular if it cannot be generated from compact regular form. See Rasters for more information.
- e.g. talus (ankle bone) and vertebrae (spinal bones)
- This refers to an impure, uneven gait of the horse.