Entry 1 sense Webster, 1913 Deferment /dĭf-ẽrm'-ənt/ · De·fer·ment · IPA /dɪˈfɚ.mənt/ 01 n. The act of delaying; postponement. 1. The act of delaying; postponement.[R.] “My grief, joined with the instant business, Begs a deferment.” — Suckling.