Synonyms for Inaugural (same or very similar meaning)
WordNet sense 1 (an address delivered at an inaugural ceremony (especially by a United States president)):
inaugural address
WordNet sense 2 (serving to set in motion):
first, initiative, initiatory, maiden
WordNet sense 3 (first or beginning):
opening
WordNet sense 4 (the ceremonial induction into a position):
inauguration
From the ODE community, based on WordNet
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