Dictionary.net

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

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

of a surface; not level or flat; "walking was difficult on the irregular cobblestoned surface"

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

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

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

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

of a surface; not level or flat; "walking was difficult on the irregular cobblestoned surface"

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

Not regular; not conforming to a law, method, or usage recognized as the general rule; not according to common form; not conformable to nature, to the rules of moral rectitude, or to established principles; not normal; unnatural; immethodical; unsymmetrical; erratic; no straight; not uniform; as, an irregular line; an irregular figure; an irregular verse; an irregular physician; an irregular proceeding; irregular motion; irregular conduct, etc. Cf. Regular.

One who is not regular; especially, a soldier not in regular service.

Not regular; not conforming to a law, method, or usage recognized as the general rule; not according to common form; not conformable to nature, to the rules of moral rectitude, or to established principles; not normal; unnatural; immethodical; unsymmetrical; erratic; no straight; not uniform; as, an irregular line; an irregular figure; an irregular verse; an irregular physician; an irregular proceeding; irregular motion; irregular conduct, etc. Cf. Regular.

One who is not regular; especially, a soldier not in regular service.

Not straight; not symmetrical; not according to established method, standards, customs, or law; abnormal; not methodical.

Not regular.

Of uneven, unequal size. A class of physicians.

Not according to rule: unnatural: unsystematic: vicious: (gram.) departing from the ordinary rules in its inflection: variable: not symmetrical.

A soldier not in regular service.

A soldier not in regular service.

Not regular; not according to common form or rules; not according to established principles or customs; not comformable to nature, or the usual operation of natural laws; not according to the rules of art; not in conformity to law, human or divine; deviating from the rules of moral rectitude; not straight; not uniform; deviating from the common rules in inflection; not in regular service; said of a cadence which does not end upon the tonic chord.

Not according to rule; unsystematic; variable.

Not according to usual forms or rules; not according to established principles or customs; not in conformity to law; wanting symmetry; not regular, as regards mode of life; vicious.

A soldier not in regular service; one not following any fixed rule; in bot, a flower in which the parts of any of the verticils differ in size.

A term chiefly applied to the types of a disease; and also, to the pulse when its beats are separated by unequal intervals.

n. A soldier who is not in the regular service or army.

Deviating from rule, custom, or nature; immethodical, not confined to any certain rule or order; not being according to the laws of virtue.