initiative B2

/ɪˈnɪʃ.ə.tɪv/ A new plan or action started to solve a problem or improve something.

commencement C2+

/kəˈmɛnsmənt/ a beginning, or a graduation ceremony

uninitiate C2+

/ˌʌnɪˈnɪʃiɪt/ a person not initiated into special knowledge; uninstructed