deontic

adjective
de·​on·​tic | \ (ˌ)dē-ˈän-tik How to pronounce deontic (audio) \

Definition of deontic

: of or relating to moral obligation : deontological

First Known Use of deontic

1951, in the meaning defined above

History and Etymology for deontic

Greek deont-, deon that which is obligatory, from neuter of present participle of dein to lack, be needful — more at deuter-

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The first known use of deontic was in 1951

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