The quality or degree of being sensitive. / The ability to perceive sensation. / The ability to be aware of (and, usually, react with regard to) the feelings of others.

plural of sensitiveness

Having the faculty of sensation; pertaining to the senses. / Responsive to stimuli. / (of a person) Easily offended, upset or hurt.

A person with a paranormal sensitivity to something that most cannot perceive.

The quality or state of being sensitive; sensitiveness. / The ability of an organism or organ to respond to external stimuli.

To make (someone or something) sensitive or responsive to certain stimuli. / To make (someone) increasingly aware of, in a concerned or sensitive way.

The process of making something sensitive.

In a sensitive manner; with sensitivity.

simple past tense and past participle of sensitize

Made sensitive, especially to some specific agent.