Creepy is a word that sounds horrible which is defined as "as of things crawling on one's skin". Though I heard people say "that kid is creepy" when I at least don't think that kid is horrible. It looks like the kid is just a little too annoying and behave a little differently.
Then I looked up its definition other than the horrible meaning. I say other than the horrible meaning because I understand that part but I don't believe people describe a kid as horrible or scary in real world.
The American Heritage Dictionary shows:
Annoyingly unpleasant; repulsive:
e.g. the creepy kids next door.
The Merriam-Webster shows:
of, relating to, or being a creep : annoyingly unpleasant
e.g. a creepy old man
The Oxford Advanced Learner shows:
strange in a way that makes you feel nervous
e.g. That guy is just creepy.
e.g. a creepy little man with a nervous tic
See the definitions above. I don't understand what action of a kid can be understand as creepy. First of all, I really don't think a kid in real word (other than those google images) can make you feel horrible and scary. Then the "annoyingly unpleasant" definition in AHD and MW just sounds like naughty, because kids always make you unpleasant because they are too annoying. But it isn't a bad thing at all. The Oxford definition of "strange in a way that makes you feel nervous" is too vague. My exam is also strange in a way that makes me feel nervous (which definitely not fit here).
If I describe a annoying or too naughty kid as creepy, is it too strong? In this case, I should avoid it. But I also would like to know what actions can be or when it is proper to describe him as creepy (maybe not in front of his parents).