Ir*reg"u*lar (?), a. [Pref. ir- not + regular: cf. F. irrégulier.] 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.

Mazes intricate,
Eccentric, intervolved, yet regular
Then most when most irregular they seem.

Leading the men of Herefordshire to fight
Against the irregular and wild Glendower.

A flowery meadow through which a clear stream murmured in many irregular meanders.

Syn. -- Immethodical; unsystematic; abnormal; unnatural; anomalous; erratic; devious; crooked; eccentric; unsettled; uneven; variable; changeable; mutable; desultory; disorderly; wild; immoderate; intemperate; inordinate; vicious.

Ir*reg"u*lar, n. One who is not regular; especially, a soldier not in regular service.

• something non-standard; something that breaks the series