We’ll start with the Impediment Jinx, for ten minutes, then we can get out the cushions and try Stunning again.’
After ten minutes on the Impediment Jinx, they laid out cushions all over the floor and started practising Stunning again.
It seemed to have been her who had hit him with the Impediment Jinx; she was holding her whistle in one hand and a wand in the other; her broom lay abandoned several feet away.
Behind him, the Impediment Jinx was wearing off.
’Couple of Stunners, a Disarming Charm, Neville brought off a really nice little Impediment Jinx,’ said Ron airily, now handing back Hermione’s wand, too.
…doing the very thing she and the Ministry most feared, and whenever he was supposed to be reading Wilbert Slinkhard’s book during her lessons he dwelled instead on satisfying memories of their most recent meetings, remembering how Neville had successfully disarmed Hermione, how Colin Creevey had mastered the Impediment Jinx after three meetings’ hard effort, how Parvati Patil had produced such a good Reductor Curse that she had reduced the table carrying all the Sneakoscopes to dust.
There are no more uses of "impediment" in the book.
Show samples from other sources
a speech impediment
Personal animosity has become an impediment to progress.