Definition of side-splittingly in English:

side-splittingly

adverb

informal
  • See side-splitting

    • ‘Not a film for people who don't get British comedy, but it's side-splittingly funny if you do.’
    • ‘His live performances are side-splittingly brilliant, his concert videos sell by the million and the breadth of his appeal is unrivalled.’
    • ‘While not always side-splittingly funny, her delivery is genuine and her stories relevant.’
    • ‘Sharp, side-splittingly funny and shockingly sad, the book was snapped up by Hollywood immediately.’
    • ‘From his side-splittingly amusing brother and uncle, to his newfound Mexican friend Pedro, these characters are so weird, pathetic, likeable and quotable that you'll still be laughing at them long after the movie has ended.’