中二病

Etymology
.

Noun

 * 1)  “sickness” in teenagers characterized by sophomoric, edgy, and pretentious behavior

Etymology
Compound of. .

Noun

 * 1)  a “sickness” in teenagers characterized by sophomoric, edgy, and/or pretentious behaviour (trying too hard to be special in unusual ways)

Adjective

 * 1) characterized by such behaviour