(uncountable) The state of adverse conditions; state of misfortune or calamity. / (countable) An event that is adverse; calamity.

A tendency or wish to avoid someone or something. / (obsolete) An adverting or turning towards; attention.

Quality of being adversative.

adversativeness

opposite, contrary / causing adversion

The rejection for employment, placement, or promotion of a significantly higher percentage of a protected class, when compared with a non-protected class.

(transitive, law) To take ownership of (property) through the doctrine of adverse possession.

(law) A means of acquiring title to another's real property without compensation by occupying the property in a manner that has under common law the requirements of being actual, open and notorious, exclusive, hostile, under cover of claim or right, and continuous for a certain number of years.

Third-person singular simple present indicative form of adversely possess

(sciences) A side-effect, especially a negative one in pharmacology.