Percolate slowly is a term used to describe a process in which liquid passes through a porous material, such as coffee grounds, at a slow rate. The two crossword solutions for this term are SEEP and OOZE, both of which refer to the slow movement of liquid. SEEP is defined as a gradual flow of liquid, while OOZE is defined as a slow, thick, and sticky flow. Both words accurately describe the process of percolating slowly.