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rant  (rants plural & 3rd person present) (ranting present participle) (ranted past tense & past participle )
1  verb If you say that someone rants, you mean that they talk loudly or angrily, and exaggerate or say foolish things. 
As the boss began to rant, I stood up and went out...  V 
Even their three dogs got bored and fell asleep as he ranted on...  V on 
`Let's get it over and done with, and to hell with them,' he ranted.  V with quote 
  Rant is also a noun., n-count 
Part I is a rant against organised religion.  
 ranting  (rantings plural) n-var 
He had been listening to Goldstone's rantings all night...  
2 If you say that someone rants and raves, you mean that they talk loudly and angrily in an uncontrolled way. 
rant and rave    phrase Vs inflect  (disapproval)  I don't rant and rave or throw tea cups.  

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"Collins Cobuild English Dictionary for Advanced Learners 4th edition published in 2003 © HarperCollins Publishers 1987, 1995, 2001, 2003 and Collins A-Z Thesaurus 1st edition first published in 1995 © HarperCollins Publishers 1995"