deontology

de·on·to·lo·gy
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UK/ˌdiːɒnˈtɒləd͡ʒi/US/diˌɑnˈtɑləd͡ʒi/

noun

Synonym of ethics (“the study of principles relating to right and wrong conduct”).

RareFirst used c. 1826Scrabble 15

Meanings

noundeontology (usually uncountable, plural deontologies)

plural deontologies

  1. uncountableusuallyethicsSynonym of ethics (“the study of principles relating to right and wrong conduct”).First known use c. 1826

    And then she discoursed with voluble blandiloquence on deontologies and morals, and pondered with imposing gravity on ancient lores, and wisdoms, and beatifications, and in all her countenance seemeth as demure as a babe asleep.

    1898, [John Martin Russell], “[Book of Revelation.] Chapter XIII, 11–18. The Second Beast.”, in The Seven Ages of Creation: Or Cosmos and the Mysteries Expounded […], Fort Dodge, Iowa: E. A. Tryon, […], →OCLC, page 231
    5 more examples

    [Matthew Hale] was no reformer: nothing better than an expounder: every thing stated by him was stated as he found it, or conceived it to be: no inquiries as to what it ought to be: in the eyes of lawyers—not to speak of the dupes—that is to say, as yet, the generality of non-lawyers—the is and the ought to be (or, as in Greek it would be so much better—the το ον and the το δεον, from which last, Ethics has received the more expressive name of Deontology), were one and indivisible.

    1826 October, Jeremy Bentham, “Art. VIII.—Observations on the Actual State of the English Law of Real Property, with the Outlines of a Code. By James Humphreys, Esq. of Lincoln’s Inn, Barrister. 8vo. Murray. London. [book review]”, in The Westminster Review, volume VI, number XII, London: Baldwin, Cradock, and Joy, →OCLC, page 448

    The principle, then, on which Deontology is grounded, is the principle of Utility; in other words, that every action is right or wrong—worthy or unworthy—deserving approbation or disapprobation, in proportion to its tendency to contribute to, or to diminish the amount of public happiness.

    a. 1833 (date written), Jeremy Bentham, “Deontology Explained—Term Why Adopted”, in John Bowring, editor, Deontology; or, The Science of Morality: […], volume I, London: Longman, Rees, Orme, Browne, Green, and Longman; Edinburgh: William Tait, published 1834, →OCLC, part I (Theory of Virtue), pages 23–24

    [T]he main concern of the last two hundred and fifty years or so of ethics has been to assess the morality of actions or rules by themselves – act-and-rule utilitarianisms and deontologies – as opposed to an interpretation of actions within a morality of being.

    1985, William S. Hamrick, “Kindness”, in William S. Hamrick, editor, Phenomenology in Practice and Theory (Phenomenologica; 92), Dordrecht, South Holland; Boston, Mass.: Martinus Nijhoff Publishers, →ISBN, part 3 (Aesthetic, Ethical, and Religious Values), page 204

    William Frankena has altered [Charlie Dunbar] Broad's distinction slightly to define teleology as making consequences the "one and only … ultimate right-making characteristic" and to define deontology as allowing "that there are other considerations that may make an action or rule right or obligatory besides the goodness or badness of its consequences …"[…].

    1996, James B. Tubbs, Jr., “Richard McCormick: Ordered Values and Proportionate Reasons”, in Christian Theology and Medical Ethics: Four Contemporary Approaches (Theology and Medicine; 7), Dordrecht, South Holland; Boston, Mass.: Kluwer Academic Publishers, →ISBN, page 36

    Deontologies that arise from status functions are not morally neutral. This is in part because of familiar issues such as that people are likely to rely on the observance of such deontologies, the wrongfulness of freeriding, and so on.

    2021, Allan Beever, “Justification”, in Law’s Reality: A Philosophy of Law (Elgar Studies in Legal Theory), Cheltenham, Gloucestershire; Northampton, Mass.: Edward Elgar Publishing, →DOI, →ISBN, part III (Reconstructing the Philosophy of Law), page 301

    Synonyms: moral philosophy, ethics

    1. specificallyuncountableusuallyethicsThe normative ethical theory that the morality of an action is based on whether the action follows certain obligations or rules, rather than on its inherent goodness, consequences, etc.

      Synonyms: moral philosophy

Synonyms & antonyms

nounSynonym of ethics (“the study of principles relating to right and wrong conduct”).

nounThe normative ethical theory that the morality of an action is based on whether the action follows certain obligations or rules, rather than on its inherent goodness, consequences, etc.

Also see

Origin

  1. Proto-Indo-European*deh₁-“to bind”
  2. Ancient Greekδέον“that which is binding, needful, proper, or right”
  3. Englishdeontology

Learned borrowing from Ancient Greek δέον (déon, “that which is binding, needful, proper, or right”) + English -ology (variant of -logy (suffix denoting a branch of learning or a study of a particular subject)). Δέον (Déon) is the neuter present participle of δεῖ (deî, “it behoves one to, it is necessary to, one must”), from δέω (déō, “to bind, tie; to fasten; to fetter”), ultimately from Proto-Indo-European *deh₁- (“to bind”). Sense 1 (“synonym of ethics”) was coined by the English philosopher Jeremy Bentham (1748–1832) to refer to censorial or dicastic ethics (ethics based on judgment), while sense 1.1 (“normative ethical theory that the morality of an action should be based on whether the action follows certain obligations or rules”) derives from the use of the word deontological by the English philosopher Charlie Dunbar Broad (1887–1971) in his book Five Types of Ethical Theory (1930).

Full word history & related roots →

Translations

Catalan deontologia
  • deontologiasynonym of ethics — see also ethics
Chinese Mandarin 本務論 /本务论, 道義論 /道义论
  • 本務論 /本务论 (běnwùlùn)synonym of ethics — see also ethics
  • 道義論 /道义论 (dàoyìlùn)synonym of ethics — see also ethics
  • 義務論 /义务论 (yìwùlùn)synonym of ethics — see also ethics
Czech deontologie
  • deontologiesynonym of ethics — see also ethics
Dutch deontologie
  • deontologiesynonym of ethics — see also ethics
Esperanto deontologio
  • deontologiosynonym of ethics — see also ethics
Finnish deontologia, deontologia
  • deontologianormative ethical theory that the morality of an action should be based on whether the action follows certain obligations or rules
  • deontologiasynonym of ethics — see also ethics
  • deontologinen etiikkasynonym of ethics — see also ethics
  • sääntöetiikkasynonym of ethics — see also ethics
  • velvollisuusetiikkasynonym of ethics — see also ethics
  • velvollisuusoppisynonym of ethics — see also ethics
French déontologisme, déontologie
  • déontologismenormative ethical theory that the morality of an action should be based on whether the action follows certain obligations or rules
  • déontologiesynonym of ethics — see also ethics
German Deontologie
  • Deontologienormative ethical theory that the morality of an action should be based on whether the action follows certain obligations or rules
Greek δεοντολογία
  • δεοντολογία (deontología)synonym of ethics — see also ethics
Hungarian deontológia, kötelességetika
  • deontológiasynonym of ethics — see also ethics
  • kötelességetikasynonym of ethics — see also ethics
  • kötelességtansynonym of ethics — see also ethics
Icelandic skyldufræði
  • skyldufræðisynonym of ethics — see also ethics
Indonesian tata susila
  • tata susilasynonym of ethics — see also ethics
Irish dualeolaíocht
  • dualeolaíochtsynonym of ethics — see also ethics
Italian deontologia
  • deontologiasynonym of ethics — see also ethics
Japanese 義務論
  • 義務論synonym of ethics — see also ethics
Lithuanian deontologija
  • deontologijasynonym of ethics — see also ethics
Malay deontologi, tata susila
  • deontologisynonym of ethics — see also ethics
  • tata susilasynonym of ethics — see also ethics
Persian اخلاق وظیفهگرا
  • اخلاق وظیفهگراsynonym of ethics — see also ethics
Polish deontologia, deontologia
  • deontologianormative ethical theory that the morality of an action should be based on whether the action follows certain obligations or rules
  • deontologiasynonym of ethics — see also ethics
Russian деонтология
  • деонтология (deontologija)synonym of ethics — see also ethics
Slovak deontológia
  • deontológiasynonym of ethics — see also ethics
Spanish deontología
  • deontologíasynonym of ethics — see also ethics
Swedish deontologi
  • deontologisynonym of ethics — see also ethics
Turkish deontoloji
  • deontolojisynonym of ethics — see also ethics
Ukrainian деонтологія
  • деонтологія (deontolohija)synonym of ethics — see also ethics
Vietnamese đạo nghĩa học
  • đạo nghĩa họcsynonym of ethics — see also ethics

Rhymes & wordplay

Rhymes with deontology

All rhymes →
Cite this entry
APA

deontology. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/deontology

MLA

“deontology.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/deontology. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “deontology,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/deontology.

Source: deontology on Wiktionary, CC BY-SA 4.0.