In a manner that is aggressive, hostile, or intended to challenge or harm someone.
From 'attacking' (the present participle of 'attack') plus the adverbial suffix '-ly.' This formation allows 'attack' as a verb to modify other actions and describe how something is done.
While 'attackingly' is grammatically straightforward, it's surprisingly rare because English speakers prefer 'aggressively' or 'hostilely'—showing how we avoid turning combat verbs into descriptors for everyday behavior unless the situation is really tense.
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