perennial

Universal Words adjective, noun adjective 1 continuing for a very long time; happening again and again: the perennial problem of water shortage * that perennial favourite, hamburgers * Colonialism in different forms is a perennial theme of history. 2 (of plants) living for two years or more perennially adverb: a perennially popular subject noun any plant that lives for more than two years compareANNUAL, BIENNIAL