Currently confusing or overwhelming someone; astonishing or bewildering in nature.
From 'boggle' (verb) + '-ing' (Old English suffix forming present participles and gerunds). The '-ing' suffix indicates ongoing action or converts verbs into nouns/adjectives.
The '-ing' form is revolutionary in English—it lets you describe something that is currently happening OR use it as an adjective to describe how something feels, making 'boggling mind' different from 'boggled mind' by adding present action.
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