overreactive UK /ˌəʊvəɹiˈæktɪv/US /ˌoʊ.vəɹ.ɹiˈæk.tɪv/ adjective1 •Too reactive; tending to overreact.Heʼd seen it in her eyes, and even though he knew that his mind could become overreactive in such situations, he was convinced that what heʼd seen in her was contempt. — 2019 formsmore overreactive · most overreactive
