Fend off Definition 1 of 3Pro Tip 1/3Physical Defense Use 'fend off' when you physically push away danger or attacks. The boxer trained to fend off blows quickly. Pro Tip 2/3Mental Resilience It can mean staying strong against negative thoughts or influences. He fended off the temptation to give up. Pro Tip 3/3Emotional Distance Sometimes, it's about keeping yourself removed from emotional harm. She had to fend off feelings of loneliness.