expression, ichidan verb
take an aggressive stance; stir up trouble; pick a fight
Used when someone deliberately adopts a confrontational attitude or creates a dispute, often without good reason. The expression implies a readiness to escalate a situation into conflict.
彼はいつも事を構えたがる。
He always wants to pick a fight.
そんな小さなことで事を構えるな。
Don't stir up trouble over such a small thing.