fit to burst

• fit to bust (North America)

fit to burst (not comparable)

1. (informal, chiefly UK) Wholeheartedly

• “fit to burst”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.
• “fit to burst”, in Cambridge English Dictionary, Cambridge, Cambridgeshire: Cambridge University Press, 1999–present.
• “fit to burst” in Longman Dictionary of Contemporary English, Longman.
• “laughing crying coughing fit to bust burst” (US) / “laughing crying coughing fit to bust burst” (UK) in Macmillan English Dictionary.