It can be either, but more typically an adjective (a leisurely walk. to walk leisurely).
leisures
The word "leisurely" is an adverb. It is used to describe an action done in a relaxed or unhurried manner.
Slow and leisurely would be synonyms.
I took a leisurely walk to the store, since I was not in a hurry.
lazier laziest
Leisurely means slow or unhurried, and gait is a term for the way a horse walks, and is sometimes applied to human walking. So a leisurely gait is a slow pace of riding or walking.
Leisurely
It is leisurely.
request (APEX)
To do what ever you want to do for relaxation.
To wander on foot; to ramble idly or leisurely; to rove., A wandering on foot; an idle and leisurely walk; a ramble.