ADV. fast, quickly, rapidly At the moment, most reservoirs are filling fast. | gradually, slowly | up
VERB + FILL begin to The sails began to fill. | seem to He seemed to fill the room with his presence.
PREP. with Fill the bucket with water.
PHRASES be filled to capacity The school is filled to capacity?we simply can't take any more students. | be filled to the brim (with sth) The drawers were all filled to the brim.