Jelly-Brain Jinx
no incantation given
Presumably affects the target's mental processes.
During the September 1999 riot that took place during the Puddlemere/ Holyhead game, a lot of Harpy supporters were using this jinx (DP).
Jelly-Fingers curse
no incantation given
Presumably makes the target's fingers like jelly, so that they cannot grasp anything properly.
After a June 1999 Portree/ Arrows game, the losing Seeker accused his opposite number of putting this curse on him as they both closed in on the Snitch (DP).
Jelly-Legs Jinx
no incantation given
Causes the target's legs to wobble uncontrollably.
Hermione used the spell to break Harry's Shield Charm as they were practicing for the third task (GF31).
Malfoy, Crabbe, and Goyle were hit with this jinx (along with a few other hexes and curses) on the Hogwarts Express (GF37).
jinxes
A jinx is a spell cast to cause damage or other negative effect. A jinx is
similar to a curse, but typically not as
powerful or cast with such negative intention. Jinxes are part of
defensive magic, although
Umbridge tried to teach that
spells should never be used in this way, even in self-defense or as part of
a legitimate attack. She used the textbook
Defensive Magical Theory
by Slinkhard:
'He says that counter-jinxes are improperly named,' said Hermione promptly. 'He says "counter-jinx" is just a name people give their jinxes when they want to make them sound more acceptable (OP15)'.
A jinx is removed or undone by a counter-jinx. Defenses against jinxes are called "anti-jinxes." Some jinxes are also referred to as hexes.
Warrington of Slytherin was hit with a jinx that made his skin look as though he were covered with corn flakes (OP30).
Madam Pince has been known to place jinxes on library books to protect them from students who might doodle on them, tear out pages, or keep them checked out for too long (QA).
To repair the exploding toilet caused by Willy Widdershins, Arthur told Harry he would use a 'simple enough' anti-jinx (OP9).
The handle of Ron's new Cleansweep 11 had an anti-jinx varnish applied to it (OP9).
Jinxes:
