notoriously
UK: nəʊˈtɔːriəsli | US: noʊˈtɔːriəsli
adv. in a way that is widely known, typically for something negative
adv. to an extreme or conspicuous degree
The word "notoriously" derives from the adjective "notorious," which entered English in the late 16th century from Medieval Latin "notorius" (well-known, evident). This, in turn, comes from Latin "notus" (known), the past participle of "noscere" (to know). The suffix "-ly" is an Old English adverbial marker, turning adjectives into adverbs. Over time, "notorious" acquired a negative connotation, emphasizing fame for unfavorable reasons, and "notoriously" inherited this shade of meaning.
The restaurant is notoriously slow with its service.
He is notoriously difficult to work with.
The city is notoriously crowded during the festival.
She is notoriously late to every meeting.
The software is notoriously buggy and unreliable.