underreactive

== English == === Pronunciation === (General American) IPA(key): /ˌʌnd.əɹ.ɹiˈæk.tɪv/ (Received Pronunciation) IPA(key): /ˌʌndəɹiˈæktɪv/ === Adjective === underreactive (comparative more underreactive, superlative most underreactive) Insufficiently reactive; underreacting.