rant
n. countablen. a long, angry, and often confused speech about something you dislike. People usually do this when they are very frustrated and want to complain loudly.
n. a lengthy, impassioned, and often repetitive speech or piece of writing, typically expressing strong disapproval or frustration.
He went on a long rant about the new parking rules.
After the game, the coach delivered a ten-minute rant about the team's lack of focus and poor discipline.
The editorial was less of a reasoned argument and more of a bitter rant against the modern education system, lacking any constructive suggestions for reform.
From Dutch ranten, randen (“to talk nonsense, rave”), from Middle Dutch ranten (“to rant, babble, goof around”), of uncertain origin; but apparently related to Middle High German ranzen (“to dance, jump around, frolic”), German ranzen (“to be ardent, be in heat, copulate, mate, ramble, join up”).
Often used with the verb 'to go on' ('go on a rant').