IPA: /ˈkrɪtɪsɪzəm/
KK: /ˈkrɪtɪsɪzəm/
The act of expressing disapproval or finding faults in someone or something.
Her criticism of the movie was very insightful and helped me understand it better.
Criticism is formed from "crit" (from Greek "krinein", meaning to separate or decide) and "-ism" (meaning a practice or philosophy). The word refers to the practice of evaluating or separating the merits and faults of something, often in a judgmental manner.
Think of 'deciding' ('krinein') what is good or bad about something — that's what criticism means.