From Recent Sermons:
Love: Love is the overflow of joy in God that meet the needs of others. Or: The grace-enabled impulse to increase your joy by seeing it expand into other people.
Freedom: You are fully free—completely free, free indeed—when you have the desire, the ability, and the opportunity to do what will make you happy in a thousand years. Or we could say, You are fully free when you have the desire, the ability, and the opportunity to do what will leave you no regrets forever.
And yes, I’ve added these definitions to my list of Piper Definitions