Present participle of breakfast; the act of eating breakfast or having the morning meal.
From 'breakfast' + '-ing' (present participle suffix). The gerund form allows 'breakfasting' to function as a noun, verb, or adjective in sentences.
The '-ing' form turns a noun into an action, so 'breakfasting' can mean the physical act, or it can describe a whole lifestyle—'a breakfasting culture.' This flexibility is one of English's superb tricks.
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