British informal Extremely enthusiastic: some men are mad keen on football
More example sentences
- The Namibians are mad keen anglers and are extremely knowledgeable, competent, kind, helpful and dedicated to giving their clients the best possible trip.
- Tony Heart is himself a mad keen angler and he works extremely hard at putting his anglers over the abundant quality fish; his spacious boat is purpose built for angling and cruises effortlessly at 14/15 knots.
- You're mad keen on history - what's your favourite fact about London's past?
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