cynicism

noun

An inclination to believe that people are motivated purely by self-interest; scepticism.

SYNONYMS

disbeliefdisenchantmentdisillusiondistrustdoubtdoubtfulnessdubietyincredulitymistrustnegative thinkingnegativitypessimismsardonicismscepticismscoffingsuspicionunbeliefworld-weariness