rave vi. [WPI] 1. To persist in discussing a specific subject.

rave vi.

[WPI] 1. To persist in discussing a specific
subject. 2. To speak authoritatively on a subject about which one
knows very little. 3. To complain to a person who is not in a
position to correct the difficulty. 4. To purposely annoy another
person verbally. 5. To evangelize. See flame. 6. Also used
to describe a less negative form of blather, such as friendly
bullshitting. `Rave' differs slightly from flame in that
`rave' implies that it is the persistence or obliviousness of the
person speaking that is annoying, while flame implies somewhat
more strongly that the tone or content is offensive as well.