Definition of countermovement in US English:

countermovement

noun

  • A movement or other action made in opposition to another.

    ‘athletes performing a standing jump can jump higher if they make a countermovement’
    ‘every attempt to do something risks a countermovement of opposition’

Pronunciation

countermovement

/ˈkoun(t)ərˌmo͞ovmənt//ˈkaʊn(t)ərˌmuvmənt/