Timeless; immortal
Without a date imprinted, assigned, or associated.
Out of one's head; deranged.
Thick-headed.
Having no date—a meeting with a lover or potential lover.
Without a start; immemorial
Lasting forever; unending.
existing outside time; as opposed to sempiternal, existing within time but everlastingly
Constant; perpetual; ceaseless; ever-present.
One who lives forever; an immortal.