At leisure and With time on one's hands

At leisure adverb - In an unhurried way or at one's convenience.

With time on one's hands and at leisure are semantically related. In some cases you can use "With time on one's hands" instead an adjective phrase "At leisure".

At leisure and with time on one's hands are semantically related. You can use "At leisure" instead an adjective phrase "With time on one's hands".