Definition of overexertion in US English:

overexertion

noun

  • See overexert

    • ‘The ill-prepared often overcompensate for these variations with too much clothing or through overexertion.’
    • ‘The recordings testify to an aesthetic of physical overexertion played out in an acoustic medium.’
    • ‘‘Heat exhaustion’ results from overexertion in hot weather.’
    • ‘I don't think that requiring a few blogs a week is tantamount to overexertion.’
    • ‘On the continent, Bonaparte's vaulting ambition imposed such a degree of overexertion that every success he gained served only to make his eventual collapse more certain.’

Pronunciation

overexertion

/ˌōvəriɡˈzərSH(ə)n//ˌoʊvərɪɡˈzərʃ(ə)n/