countermeasure

[ koun-ter-mezh-er ]
/ ˈkaʊn tərˌmɛʒ ər /

noun

an opposing, offsetting, or retaliatory measure.

Origin of countermeasure

First recorded in 1920–25; counter- + measure

British Dictionary definitions for countermeasure

countermeasure
/ (ˈkaʊntəˌmɛʒə) /

noun

action taken to oppose, neutralize, or retaliate against some other action