Immemorial
Part of speech: adjective
Definition: That is beyond memory; ancient.
Example sentence: You tend to put your rock stars on pedestals - they seem like they've been there for time immemorial. But you realize that the rock stars have their own rock stars. They were fans and kids once, too.
Old
Part of speech: adjective
Definition: Of an object, concept, relationship, etc., having existed for a relatively long period of time.Of a living being, having lived for relatively many years.Having existed or lived for the specified time.Former, previous.Obsolete; out-of-date.TiresomeSaid of subdued colors, particularly reds, pinks and oranges, as if they had faded over time.Of an object, concept, relationship, etc., having existed for a relatively long period of time.
Example sentence: Anyone who stops learning is old, whether at twenty or eighty. Anyone who keeps learning stays young. The greatest thing in life is to keep your mind young.