"Hermione," said Ron in a low and indignant voice, "are you going to stop telling Harry off and listen to Binns, or...?"
’I did!’ said Harry indignantly.
’Yes, we can!’ said Mrs Figg indignantly.
’We thought Dumbledore was bound to pick you!’ said George indignantly.
’What are Fred and I, next-door neighbours?’ said George indignantly, as his mother pushed him aside and flung her arms around her youngest son.
I’ve definitely done more, Harry thought indignantly.
She let out a scream of mirth that caused Hedwig to wake up and flap her wings indignantly and Crookshanks to leap up into the luggage rack, hissing.
’What?’ said Ron indignantly, having managed, finally, to swallow his tood.
’We’re paying them!’ said Fred indignantly.
’Scared of them, I expect,’ said Sirius, smiling at her indignation.
He sank into a deep bow so that his pencil-like nose brushed the threadbare surface of the hearthrug and Hedwig gave an indignant hoot and fluttered on to the arm of Harry’s chair.
’Hark who’s talking, you walked out of Divination, you hate Trelawney!’ said Ron indignantly.
’Hermione, it was your idea in the first place!’ said Ron indignantly.
’What’s that supposed to mean?’ said Ron indignantly.
’No!’ said Harry indignantly, racking his brains to think what he could have done that would make Snape pursue him to Grimmauld Place.
’Hold yer Hippogriffs, I haven’ finished me story yet!’ said Hagrid indignantly, who, considering he had not wanted to tell them anything in the first place, now seemed to be rather enjoying himself.
Harry, whose head was still full of Cho’s parting wave, did not find this subject quite as interesting as Ron, who was positively quivering with indignation, but it did bring something home to him that until now he had not really registered.
’Professor Trelawney —’ began Parvati, in a hurt and indignant voice.
Anyway…’ The story was told in five minutes, by the end of which Ron’s indignation had been replaced by a look of total incredulity.
* The fact that Hagrid was now on probation became common knowledge within the school over the next few days, but to Harry’s indignation, hardly anybody appeared to be upset about it; indeed, some people, Draco Malfoy prominent among them, seemed positively gleeful.
’Well, I don’t think Snape should stop until you’re absolutely sure you can control them!’ said Hermione indignantly.
’No, it ruddy well wasn’!’ said Hagrid indignantly.
’Your Forest?’ said Umbridge, shaking now not only with fright but also, it seemed, with indignation.
Uncle Vernon’s moustache seemed to bristle with indignation.
There are no more uses of "indignant" in the book.
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She was indignant, but agreed to be searched when they accused her of shoplifting.