Synonyms for Commencement (same or very similar meaning)
WordNet sense 1 (the time at which something is supposed to begin):
beginning, first, kickoff, offset, outset, start, get-go, showtime, starting time
WordNet sense 2 (an academic exercise in which diplomas are conferred):
graduation, commencement ceremony, commencement exercise, graduation exercise
From the ODE community, based on WordNet
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