Definition of causer in US English:

causer

noun

  • See cause

    • ‘We plan to pursue this very hard to catch the trouble causers responsible.’
    • ‘We must be tough on this crime, and even tougher on the causers of such crime.’
    • ‘They have been completely absorbed, so they aren't wreckers and problem causers any more.’
    • ‘It was natural for us to attempt to paint ourselves in a more favorable light while making out the others as the troublemakers and causers of ruin.’
    • ‘I would like to ascertain that it is not the claimer/victim of the accident who is putting premiums up but the causer of the accident for their stupidity or lack of attention.’