The word "disaccustomed" means to become unaccustomed or unfamiliar with something. Its antonyms are words that express opposite meanings. Some of the antonyms for disaccustomed would be accustomed, familiar, habituated, used to, and inured. So, when we want to express that we are used to or familiar with something, we use the antonyms of disaccustomed. For example, "He's accustomed to working long hours" or "She's inured to the city noise." By using the antonyms of disaccustomed, we can convey a positive or neutral sentiment, indicating that we are accustomed or familiar with something rather than confused or uncertain.