an authoritative prohibition:an interdict against marriage of those of close kin (in the Roman Catholic Church) a sentence barring a person, or especially a place, from ecclesiastical functions and privileges:a papal interdict
[with object] chiefly North American
1prohibit or forbid (something):society will never interdict sex
(interdict someone from
) prohibit someone from (doing something):I have not been interdicted from consuming or holding alcoholic beverages
2intercept and prevent the movement of (a prohibited commodity or person):the police established roadblocks throughout the country for interdicting drugs Military impede (an enemy force), especially by aerial bombing of lines of communication or supply.