To make something classic or to give it the qualities of a classic.

Having been made classic or given classic qualities.

क्लासिक गुण प्राप्त किया हुआ।

English Usage: The novel was classicised over the years, gaining timeless appeal.

Hindi Usage: इस उपन्यास को वर्षों में क्लासिक का दर्जा मिला, जिससे इसकी अपील अमर हो गई।