Inured refers to becoming accustomed to something negative or unpleasant, but if one wishes to express the opposite of being more inured, some potential antonyms include sensitive, unaccustomed, vulnerable or naive. These antonyms describe the lack of familiarity one has with a particular situation, thus making them more sensitive or unfamiliar to it. Being unaccustomed means not being adapted to a particular environment or situation, thus making them more susceptible to its negative effects. Vulnerable suggests a lack of protection or defense from harm, while naive implies having little knowledge or experience and thus being easily influenced. All of these antonyms stand in stark contrast to being more inured, as they suggest a certain level of emotional or physical fragilety.