get involved inUsed for getting involved in, meddling with, or dabbling in something, often with a negative implication that it is risky, inappropriate, or beyond one's area of expertise. With a person, it can mean to mess with or attack them.
JA: 初心者がいきなり株に手を出すのは危険だ。
EN: It’s dangerous for a beginner to start dabbling in stocks right away.