Ignoring Uncle Vernon’s ongoing rant about owls, and narrowing his eyes against a second cloud of dust as the most recent owl look off back up the chimney, Harry read Sirius’s message.
’If it hadn’t been for herů’ Ron went into a rant about Marietta Edgecombe, which Harry found helpful; all he had to do was look angry, nod and say ’Yeah’ and That’s right’ whenever Ron drew breath, leaving his mind free to dwell, ever more miserably, on what he had seen in the Pensieve.
There are no more uses of "rant" in the book.
Show samples from other sources
The captain is ranting and roaring about our lack of military discipline.
She will rant about my grades and the way I dress, but she loves me.