Refill when you don't really need to, 4 letters
Part 4 of quote, 18 letters
Cube steak, usually, 6 letters
Convertible driver's option, 5 letters
Fill anew, 5 letters
Fill to the brim, in a pub, 5 letters
Freshen, as a drink, 5 letters
Refill, as a coffee mug, 5 letters
Refresh, as a cup of coffee, 5 letters
Replenish, in London, 5 letters
Rationale for stealing artwork (Part 2), 15 letters