honorariumhon·o·rar·i·um /ˌɒnəˈreəriəmˌɑːnəˈrer-/ noun (plural honorariums or honoraria /-riə/) [countableC] formalHUMAN RESOURCES a sum of money offered to someone for their servicesSYN FEEHe was paid $100,000 for writing the book, and the honorarium is now the subject of an inquiry.