expression, godan verb (-ru)
take action; move into action; get started
Fixed expression meaning to move from planning or thinking into actual action. Often used when someone finally starts doing something concrete.
計画を練るだけでなく、そろそろ行動に移ろう。
Instead of just making plans, let's start taking action soon.
彼は決心
He's the type who moves into action as soon as he makes up his mind.