PERENNIAL
- Lasting or existing for a long or apparently infinite time; enduring
- (of a plant) Living for several years
- (esp. of a problem or difficult situation) Continually occurring
- is used to describe things that exist or continue in the same way or state for a long time, as well as things that happen again and again.
- present at all seasons of the year.
- (of a person) Apparently permanently engaged in a specified role or way of life
- (of a stream or spring) Flowing throughout the year
- lasting for many years [adj PERENNIALLY] / a plant that lives more than two years [n -S]