[ir-i-gahrd-lis] /ˌɪr ɪˈgɑrd lɪs/
an erroneous word that, etymologically, means the opposite of what it is used to express. Attested in non-standard writing from at least 1870s (e.g. “Portsmouth Times,” Portsmouth, Ohio, U.S.A., April 11, 1874: “We supported the six successful candidates for Council in the face of a strong opposition. We were led to do so because we believed every man of them would do his whole duty, irregardless of party, and the columns of this paper for one year has [sic] told what is needed.”); probably a blend of irrespective and regardless. Perhaps inspired by the colloquial use of the double negative as an emphatic.
[ih-reg-yuh-ler] /ɪˈrɛg yə lər/ adjective 1. without symmetry, even shape, formal arrangement, etc.: an irregular pattern. 2. not characterized by any fixed principle, method, continuity, or rate: irregular intervals. 3. not conforming to established rules, customs, etiquette, morality, etc.: highly irregular behavior. 4. not according to rule, or to the accepted principle, method, course, order, […]
- Irregular astigmatism
irregular astigmatism n. Astigmatism in which different parts of the same meridian have different degrees of curvature.
- Irregular bone
irregular bone n. Any of a group of bones having peculiar or complex forms, such as the vertebrae.
- Irregular dentin
irregular dentin n. See tertiary dentin.