Possess is a verb. Verbs have no “possessive form”. I (singular) possess, you (singular) possess, he/she/it (singular) possesses, we (plural) possess, you (plural) possess, they (plural) possess. The singular noun is possession, plural: possessions.Click to see full answer. Regarding this, is it possess or posses? As verbs the difference between possess and posses is that possess is to have; to have ownership of while posses is (poss).Beside above, which means to possess or get control of something? possess. To possess something is to have or own it. You can possess a physical object, you can possess a particular quality or skill, or you can possess control or influence over someone. Also know, how do you use possesses in a sentence? possesses Sentence Examples The university possesses a very important library. The monastery also possesses the firman of Mahommed II. Australia possesses one mountain which, though not a volcano, is a ” burning mountain.” What is Possesse?1a(1) : influenced or controlled by something (such as an evil spirit, a passion, or an idea) (2) : mad, crazed. b : urgently desirous to do or have something. 2 obsolete : held as a possession.