Entry 2 senses · 2 variants Webster, 1913 Deterrent /dĭt-ẽrr'-ənt/ · De·ter·rent · IPA /dɪˈtɝənt/ a. n. 01 a. Serving to deter. 1. Serving to deter. 02 n. That which deters or prevents. 1. That which deters or prevents.