Open English Wordnet
Nouns
(n)sensitivity, sensitiveness, sensibility(physiology) responsiveness to external stimuli; the faculty of sensation“sensitivity to pain”
(n)sensitivity, sensitivenessthe ability to respond to physical stimuli or to register small physical amounts or differences“a galvanometer of extreme sensitivity”, “the sensitiveness of Mimosa leaves does not depend on a change of growth”
(n)sensitivity, sensitivenessthe ability to respond to affective changes in your interpersonal environment