to terrify, to frighten, to scare, to alarm, to intimidate, to startle, to panic, to fill with fear, to appall, to horrify, to dismay, to overawe
Causative of رَهِبَ (rahiba, “to be frightened”), from the root ر ه ب (r h b).
Practice speaking and memorizing "أرهب" and many other words and sentences in Arabic.