If you have a settled way of life, you stay in one place, in one job, or with one person, rather than moving around or changing.
He decided to lead a more settled life with his partner.
他决定与爱人一起过一种更为安定的生活。
A settled situation or system stays the same all the time.
There has been a period of settled weather.
曾有一段时期天气很稳定。