Other forms: raving, raves, raved
To rave about something is to talk about it with wild enthusiasm. Nothing but praise, at length.
It takes about, and everybody knows the person who raves about a restaurant until you dread going. The noun rave review comes from this sense and is what every author wants. There is an older sense of talking wildly in delirium, which is where raving mad comes from. And since the late 1980s a rave has been an all-night dance party, which gave English rave culture and a whole musical genre.
Old French
raver
Middle English
raven — to rave; talk like a madman
English, today
rave
From Middle English raven (“to rave; talk like a madman”), from Old French raver, variant of resver, of unknown origin. Compare rave#Etymology_2 below, and rove.
Etymology from Wiktionary, CC BY-SA