agelong

US: (āj′lông′, -long′)

WordReference Random House Unabridged Dictionary of American English © 2025

age•long  (āj′lông′, -long′), adj. 

1. lasting for an age.

• age + long 1800–10

WordReference Random House Learner's Dictionary of American English © 2025

ˈage-ˌold,  adj. [before a noun]

1. ancient;
   from a time long ago:
   age-old traditions.

WordReference Random House Unabridged Dictionary of American English © 2025

age-old  (āj′ōld′), adj. 

1. ancient;
   from time immemorial:
   an age-old tradition.

• 1900–05

Collins Concise English Dictionary © HarperCollins Publishers::

age-old, age-long adjective

1. very old or of long duration; ancient