long-lived

From Middle English long-lifed, equivalent to long +‎ life +‎ -ed.

• IPA^(key): /ˈlɒŋˈlɪvd/, /ˈlɒŋˈlaɪvd/

long-lived (comparative more long-lived, superlative most long-lived)

1. Having a long lifespan; surviving for a long period of time.
2. Of a radioisotope: having a long half-life

The pronunciation /laɪvd/ (rhyming with hived) is more consistent with the word's etymology (from the noun life rather than the verb live), and was formerly more common. However, the pronunciation /lɪvd/ (the second syllable pronounced as the verb lived) is more common today.

• longevous

• short-lived

• long-livedness