Meaning

adverb in an acute manner

adverb having a rapid onset

adverb changing suddenly in direction and degree

originEtymology tree English acute Proto-Indo-European *leyg-der. Proto-Germanic *līkąder. Proto-Germanic *-līkaz Proto-Germanic *-ê Proto-Germanic *-līkê Proto-West Germanic *-līkē Old English -līċe Middle English -ly English -ly English acutely From acute + -ly.

Etymology from Wiktionary, CC BY-SA 3.0