different between irregular vs imperfect

English

Etymology

Borrowed from Old French irreguler, from Medieval Latin or Late Latin irr?gul?ris, from in- + regularis, equivalent to ir- +? regular.

Pronunciation

• (General American) IPA^(key): /?????j?l?/

Adjective

irregular (comparative more irregular, superlative most irregular)

1. nonstandard; not conforming to rules or expectations
2. (of a surface) rough
3. without symmetry, regularity, or uniformity
4. (geometry, of a polygon) not regular; having sides that are not equal or angles that are not equal
5. (geometry, of a polyhedron) whose faces are not all regular polygons (or are not equally inclined to each other)
6. (grammar, of a word) not following the regular or expected patterns of inflection in a given language

Synonyms

• (nonstandard): abnormal, singular; see also Thesaurus:strange
• (rough): coarse, salebrous; see also Thesaurus:rough
• (without uniformity): unstable, unsteady; see also Thesaurus:unsteady
• (not following the regular patterns of inflection): heteroclite

Antonyms

• regular

Derived terms

Translations

Noun

irregular (plural irregulars)

1. A soldier who is not a member of an official military force and who may not use regular army tactics.
2. One who does not regularly attend a venue.

Translations

Catalan

Etymology

Borrowed from Late Latin irr?gul?ris.

Pronunciation

• (Balearic, Central) IPA^(key): /i.r?.?u?la/
• (Valencian) IPA^(key): /i.re.?u?la?/

Adjective

irregular (masculine and feminine plural irregulars)

1. irregular

   Antonym: regular

Derived terms

• irregularment

Related terms

• irregularitat

Further reading

• “irregular” in Diccionari de la llengua catalana, segona edició, Institut d’Estudis Catalans.
• “irregular” in Gran Diccionari de la Llengua Catalana, Grup Enciclopèdia Catalana.
• “irregular” in Diccionari normatiu valencià, Acadèmia Valenciana de la Llengua.
• “irregular” in Diccionari català-valencià-balear, Antoni Maria Alcover and Francesc de Borja Moll, 1962.

Galician

Etymology

Borrowed from Late Latin irr?gul?ris.

Adjective

irregular m or f (plural irregulares)

1. irregular

   Antonym: regular

Related terms

• irregularidade

Further reading

• “irregular” in Dicionario da Real Academia Galega, Royal Galician Academy.

Portuguese

Etymology

Borrowed from Late Latin irr?gul?ris.

Adjective

irregular m or f (plural irregulares, comparable)

1. irregular; nonstandard
2. (grammar) irregular (not following an inflectional paradigm)

Antonyms

• regular

Derived terms

• irregularmente

Related terms

• irregularidade

Further reading

• “irregular” in Dicionário Priberam da Língua Portuguesa.

Spanish

Etymology

Borrowed from Late Latin irr?gul?ris.

Pronunciation

• IPA^(key): /ire?u?la?/, [i.re.??u?la?]

Adjective

irregular (plural irregulares)

1. irregular, uneven, erratic, haphazard
2. patchy, spotty, jagged, ragged
3. fitful
4. (grammar) (of a verb etc.) irregular

   Antonym: regular

Derived terms

• verbo irregular

Related terms

• irregularidad
• regular

Further reading

• “irregular” in Diccionario de la lengua española, Vigésima tercera edición, Real Academia Española, 2014.

English

Etymology

From Middle English imperfit, from Old French imparfit (modern French imparfait), from Latin imperfectus. Spelling modified 15c. to conform Latin etymology. See im- +? perfect.

Pronunciation

• (adjective, noun) IPA^(key): /?m?p??(?)f?kt/, /?m?p??(?)f?kt/
• (verb) IPA^(key): /?mp?(?)?f?kt/

Adjective

imperfect (comparative more imperfect, superlative most imperfect)

1. not perfect

   Synonyms: defective, fallible, faultful, faulty

   Antonyms: faultless, infallible, perfect
2. (botany) unisexual: having either male (with stamens) or female (with pistil) flowers, but not with both.

   Antonym: perfect

3. (taxonomy) known or expected to be polyphyletic, as of a form taxon.
4. (obsolete) lacking some elementary organ that is essential to successful or normal activity.
   • 1653, Jeremy Taylor, Twenty-five Sermons preached at Golden Grove; being for the Winter Half-year, "Christ's Advent to Judgment"

     He […] stammered like a child, or an amazed, imperfect person.

5. (grammar) belonging to a tense of verbs used in describing a past action that is incomplete or continuous

Related terms

• imperfection

Translations

Noun

imperfect (plural imperfects)

1. something having a minor flaw
2. (grammar) a tense of verbs used in describing a past action that is incomplete or continuous

   Synonym: preterimperfect

Derived terms

• imperfective

Translations

Verb

imperfect (third-person singular simple present imperfects, present participle imperfecting, simple past and past participle imperfected)

1. (transitive) to make imperfect
   • 1651, John Donne, Letter to Henry Goodere, in Letters to Severall Persons of Honour, edited by Charles Edmund Merrill, Jr., New York: Sturgis & Walton, 1910,^[1]

     I write to you from the Spring Garden, whither I withdrew my self to think of this; and the intensenesse of my thinking ends in this, that by my help Gods work should be imperfected, if by any means I resisted the amasement.

   • 1716, Thomas Browne, Christian Morals, 2nd edition edited by Samuel Johnson, London: J. Payne, 1756, Part I, p. 43,^[2]

     Time, which perfects some things, imperfects also others.

   • 1962, Alec Harman and Wilfrid Mellers, Man and His Music: The Story of Musical Experience in the West, Oxford University Press, Part I, Chapter 5, p. 126,^[3]

     […] such was their desire for greater rhythmic freedom that composers began to use red notes as well. […] Their value was […] restricted at first, for redness implies the imperfecting of a note which is perfect if black […]

Romanian

Pronunciation

• IPA^(key): /imper?fekt/

Adjective

imperfect m or n (feminine singular imperfect?, masculine plural imperfec?i, feminine and neuter plural imperfecte)

1. imperfect

Declension

Antonyms

• perfect

Related terms

• imperfec?iune