Arousing or meriting strong dislike, aversion, or intense displeasure.

(archaic, simile) Very odious; hateful.

(international law) The national debt incurred by a regime for purposes that do not serve the best interests of the nation, and thus considered to be a personal debt of the regime and not a debt of the state.

plural of odious debt

(uncountable) The condition of being odious / (countable) An odious thing

In an odious manner.

plural of odiousness