eternal

UK: ɪˈtɜː.nəl | US: ɪˈtɜːr.nəl

Definition
  1. adj. lasting or existing forever; without end

  2. adj. unchanging over time; perpetual

  3. adj. (theology) transcending time; timeless

Structure
etern <time, age (from Latin *aeternus*)>al <adjective suffix>
Etymology

The word "eternal" traces back to Latin aeternus, derived from aevum (age, eternity), which itself originates from Proto-Indo-European aiw- (vital force, life, eternity). The suffix -al (via Old French) marks it as an adjective. The core concept of "unending time" has remained consistent, though its usage expanded from literal perpetuity (e.g., "eternal life") to metaphorical endurance (e.g., "eternal love"). The Latin root also gave rise to "eon" (via Greek aiōn), sharing the same timeless essence.

Examples
  1. The stars seemed eternal in the night sky.

  2. Their friendship was built on eternal trust.

  3. Philosophers debate whether the universe is eternal.

  4. The monument stands as an eternal symbol of freedom.

  5. In many religions, the soul is considered eternal.