American present participle: eating or acting greedily; the act of behaving gluttonously.
Present participle of American 'gluttonize,' formed by adding '-ing.' This maintains the '-ize' spelling in the progressive form, following American English standards.
The '-ing' suffix is so versatile that it creates three different grammatical forms simultaneously—a noun ('eating is fun'), an adjective ('an eating disorder'), and a verb ('she is eating')—which no other suffix can do.
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