Noun
Freedom from passion; an undisturbed state; apathy.
Source: Webster's dictionaryThe peace of the chitta (or mind stuff) can be brought about through the practice of sympathy, tenderness, steadiness of purpose, and dispassion in regard to pleasure or pain, or towards all forms of good or evil. Alice Bailey
Buddha advised his son Rahula: "Make disgust strong in you."... When the disciple sees the constituents of body and mind as impermanent, suffering and not self, he becomes disgusted with them; through his disgust he becomes dispassionate, and through dispassion he is liberated. Nyanaponika Thera
The peace of the chitta (or mind stuff) can be brought about through the practice of sympathy, tenderness, steadiness of purpose, and dispassion in regard to pleasure or pain, or towards all forms of good or evil. Patañjali
her manner assumed a dispassion and dryness very unlike her usual tone Source: Internet