Focus on the pronunciation of opportunist
English definition of “opportunist”
/ˌɑp·ərˈtu·nɪst/ n [C] disapproving
› a person who takes advantage of every chance for success without thinking about the effects on other people: There will always be opportunists ready to play on the public’s fears and prejudices. opportunistic
/ˌɑp·ər·tuˈnɪs·tɪk/ adj › Our team was pretty opportunistic and took advantage of some mistakes.