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catch on▼(to become popular)verb[UK: kætʃ ɒn] [US: ˈkætʃ ɑːn]
spread like wildfire▼(spread or disseminate rapidly or uncontrollably)verb[UK: spred ˈlaɪk ˈwaɪld.faɪə(r)] [US: ˈspred ˈlaɪk ˈwaɪld.ˌfaɪər]
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