[ dee-on-tol-uh-jee ]
/ ˌdi ɒnˈtɒl ə dʒi /


ethics, especially that branch dealing with duty, moral obligation, and right action.

Origin of deontology

1820–30; < Greek deont- that which is binding (stem of déon, neuter present participle of deîn to bind), equivalent to de- bind + -ont- present participle suffix + -o- + -logy
Related formsde·on·to·log·i·cal [dee-on-tl-oj-i-kuh l] /diˌɒn tlˈɒdʒ ɪ kəl/, adjectivede·on·tol·o·gist, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for deontology

British Dictionary definitions for deontology


/ (ˌdiːɒnˈtɒlədʒɪ) /


the branch of ethics dealing with duty, moral obligation, and moral commitment

Derived Formsdeontologist, noun

Word Origin for deontology

C19: from Greek deon duty (see deontic) + -logy
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012