決まる

to be decided; to be settled; to be fixed; to be arranged

to be unchanging; to be the same (as always); to be fixed; to be set

as 決まっている or 決まった

to be a fixed rule; to be destined; to be a convention; to be a custom; to be common knowledge

as ...と決まっている

to be well executed (of a manoeuvre in a sport, game, etc.); to go well; to succeed; to connect (of a punch)

to look good (of clothing); to look sharp; to be stylish; to suit one; to be held in place (of a hairdo)

to be struck and held (of a pose in kabuki)

to get high (on drugs)

usu. written as キマる