self-assured
🇺🇸
/ˌself əˈʃʊrd/
🇬🇧
/ˌself əˈʃʊəd/
feeling sure about yourself and your abilities
She became more self-assured after gaining experience in her job.
彼女は仕事で経験を積んだ後、より自信を持つようになりました。