Perennial typically describes things that are permanent, constant, or repeated. If you fight with your parents every year over whether they really must invite your annoying cousins for Thanksgiving, you could call that a perennial conflict.
Perennial typically describes things that are permanent, constant, or repeated: a perennial conflict. A perennial plant (also called a perennial) lasts more than two years because it produces flowers and seeds from the same root structure every year. Perennial is from Latin perennis, from the prefix per- "through" plus annus "year." Latin annus is also the source of our English word annual. An annual plant lives only one year or season.
