rantrænt(v.i.)

1. to speak or declaim extravagantly or violently; talk wildly; rave.

2. (v.t.)to utter or declaim in a ranting manner.

3. (n.)extravagant or vehement declamation.

4. a ranting speech or other utterance.

Origin of rant:

1590–1600; < D ranten (obs.) to talk foolishly

rant′ing•ly(adv.)