← BackshareGuessoverexercise/ˌoʊvərˈɛksərsaɪz/verbTo exercise too much, causing harm or exhaustion.If you overexercise, you risk injuring your muscles and joints.The trainer warned the team not to overexercise before the big game.She learned not to overexercise after she pulled a hamstring.SynonymsoverdoovertrainAntonymsrest