(Hermione’s parents were dentists.) Hagrid, the Hogwarts gamekeeper, had obliged with a sack full of his own homemade rock cakes.
Once a champion has been selected by the Goblet of Fire, he or she is obliged to see the tournament through to the end.
And as his name’s come out of the goblet…. I mean, I don’t think there can be any ducking out at this stage…… It’s down in the rules, you’re obliged…. Harry will just have to do the best he —" The door behind them opened again, and a large group of people came in: Professor Dumbledore, followed closely by Mr. Crouch, Professor Karkaroff, Madame Maxime, Professor McGonagall, and Professor Snape.
There are no more uses of "obliged" in the book.
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He obliged her by listening attentively.
They looked at me expectantly and I was obliged to comment.