A British phrase meaning to do something wholeheartedly, with total enthusiasm, or to be so full of a feeling you can barely contain it. You can be fit to burst with pride, love, excitement, or even laughter. It's a brilliantly expressive idiom — that physical sense of being so packed with emotion you might literally pop. Hugely common in UK everyday speech, totally natural across ages, and used in both casual conversation and writing.
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UK and Irish slang — Cockney, Scouse, Geordie, Yorkshire, Glaswegian, Brummie, Welsh, West Country, plus Irish English. Centuries of regional dialects feeding into modern British and Irish street talk.
See all British & Irish slang slang on Slangora.
Browse all slang words starting with F.
When her daughter crossed the finish line first, she was fit to burst with pride.
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(informal, chiefly, UK) Wholeheartedly.
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