Few weeks ago, while reading some texts a new vocabulary encountred. when translated it via English to English online dictionary, one of the synonym was the word "old"? To have or to put the aforementioned word in a sensible sentences, it could be:
..for the sake of the OLD days.
The synonym found online it contains, as far as I remember, the letter "y".
Can any of you help me to find out what that synonm was?