決定 (けってい) is generally a selectable icon on the screen or the action of one of the buttons on a video game controller. You use it to lock in settings or confirm selections, so it can be translated as “confirm” or “enter” depending on context. This is definitely a word that I’ve seen far more often since starting this job. I’m sure it gets used out in the real world (probably more along the lines of “come to a decision”), but I don’t think I ever had the opportunity to use it personally.
It pretty frequently appears on ATMs and the like, doesn’t it?
Also, technically stil a game, but I must have read the phrase “決定的な証拠品” about a billion times playing 逆転検事
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