Less thick-skinned, unreactive, stoic or numb are some antonyms for the word "more oversensitive". Less sensitive people are not as affected by criticism or unkind words, and can deal with adversity much more easily. Being stoic means being able to withstand pain or hardship without showing emotion, while being numb implies a lack of feeling or emotion. While being oversensitive can be seen as a weakness, those who are less sensitive have a better ability to stay calm and focused even when faced with a difficult situation, making them more resilient and able to weather any storm.