Quick to detect or respond to slight changes, signals, or influences. The sensitive equipment picked up even the faintest of sounds.
Easily hurt or offended by criticism or slight. She is very sensitive about her work and takes any feedback to heart.
Having or displaying a quick and delicate appreciation of others' feelings. He is a sensitive friend who always knows when something is wrong.
Requiring careful handling, management, or protection because it is delicate, confidential, or liable to cause problems. These sensitive documents must be stored in a secure safe.
Displaying an abnormal or allergic reaction to a particular substance or condition. Some people are sensitive to gluten and must avoid wheat products.