Unacquired, a word that refers to something that has not been obtained, can be contrasted with several antonyms that relate to things that have been achieved or gained. Some possible antonyms for unacquired include acquired, attained, earned, gained, won, secured, and obtained. These words all suggest that something has been successfully obtained, whether through hard work, skill, or luck. The antonyms for unacquired vary in their connotations and implications, but they all suggest a certain level of accomplishment or success, as opposed to unacquired, which implies a lack of attainment or possession.