overreactive

• over-reactive

From over- +‎ reactive.

• (General American) IPA^(key): /ˌoʊ.vəɹ.ɹiˈæk.tɪv/
• (Received Pronunciation) IPA^(key): /ˌəʊvəɹiˈæktɪv/

overreactive (comparative more overreactive, superlative most overreactive)

1. Too reactive; tending to overreact.

   overreactive parenting

   • 2019, Chigozie Obioma, An Orchestra of Minorities, Abacus (2019), page 491:

     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.