“Ron, at the next table, wasn’t having much more luck. ‘Wingardium Leviosa!’ he shouted, waving his long arms like a windmill. ‘You’re saying it wrong,’ Harry heard Hermione snap. ‘It’s Wing-gar-dium Levi-o-sa, make the “gar” nice and long.’ ‘You do it, then, if you’re so clever,’ Ron snarled. Hermione rolled up the sleeves of her gown, flicked her wand and said, ‘Wingardium Leviosa!’ Their feather rose off the desk and hovered about four feet above their heads. ‘Oh, well done!’ cried Professor Flitwick, clapping. ‘Everyone see here, Miss Granger’s done it!’ Ron was in a very bad temper by the end of the class.”
―
J.K. Rowling,
Harry Potter and the Philosopher's Stone