Hearken/ˈhɑːrkən/ Definition 1 of 2Pro Tip 1/3Archaic Context Used mostly in historical or religious texts, rarely in modern conversation. In medieval times, knights would hearken to their lord's commands. Pro Tip 2/3Attention to Detail Implies not just hearing, but actively focusing on listening to something. You must hearken to the sounds of nature on this hike. Pro Tip 3/3Respectful Listening Often suggests listening with respect or deference to someone. Students, hearken to the professor's lecture.