critical B1

/ˈkɹɪt.ɪ.kəl/ Extremely important; essential for something to succeed.

critic B1

/ˈkrɪtɪk/ A person whose job is to give opinions about books, films, music, or art.

criticize A2

/ˈkɹɪtɪsaɪz/ To say what you think is wrong or bad about someone or something.