DEONTIC Meaning of DEONTIC in English [ dɪ'ɒntɪk ]■ adjective Philosophy relating to duty and obligation as ethical concepts.OriginC19: (asnoun ~s ) from Gk deont- 'being right' (from dei 'it is right') + -ic . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004