1º_ Preposition that is used to indicate an opposition, a confrontation . It has a broad meaning for cases such as "disadvantage (because it opposes success)" or "mandatory condition for exchange ( p. and. if it is made only against a payment) " . 2º_ Antidote for poisons or witchcraft. 3º_ Organ pedalboard, which has the lowest notes. 4º_ Apocope of several words beginning with the prefix contra- .
