Nov 6, 2025 perennial pə-ˈre-nē-əl 4 syllables rare ‹ adjective. present at all seasons of the year perennial astersperennial favorites adjective. persisting for several years usually with new herbaceous growth from a perennating part the perennial quest for certaintya perennial student adjective. persistent, enduring death is a perennial literary theme › Origin Latin perennis, from per- throughout + annus year ,.