In a brusque manner; in an abrupt, curt, and somewhat rude way.
Adverbial form created from 'brusque' by adding '-ly', maintaining the French-origin base while following English adverb formation rules.
Many words borrowed from French keep their fancy spellings in English even when we've simplified related words—'brusquely' sounds more sophisticated than 'bruskly', and that perception actually matters in language!
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