expression, ichidan verb
save trouble; save effort; save time
Used when a method, tool, or situation reduces the work or steps needed, making a task easier or quicker.
このアプリを使うと、手間が省ける。
Using this app saves trouble.
ネットで注文すれば、店に行く手間が省
If you order online, you can save the effort of going to the store.