1. frugal/ˈfruɡl/ adj. 节约的／节俭的
She lives a frugal life.
她生活节俭。
I was taught to be hard-working and frugal.
爸妈教育要勤奋和节俭。
2. thrifty /ˈθrɪfti/ adj. 节约的／少花钱的
We're planning a thrifty birthday.
我们计划过一个少花钱的生日。
I've been quite thrifty after quitting my job.
辞职后我过得还挺节约的。
拓展：
cheap 小气的／抠门的
This is the gift for your father? You're cheap.
这就是给你爸爸的礼物啊。有点抠门了。
stingy /ˈstɪndʒi/ 小气的
My parents taught me to be frugal, not stingy.
我爸妈教育我要节俭，而不是吝啬。
（来源微信公众号：微学英语）
