rent-free

形容词 rent-free:

1. complimentary; without payment of rent

副词 rent-free:

1. without paying rent

rent-free

adj.（形容词）
Not being subject to rent.
免收租金的
adv.（副词）
Not having to pay or not paying rent.
免交租金地：不必交租金地或不交租金地