To flow or leak in(to something) gradually but steadily. I realized there was a fire downstairs when I noticed smoke seeping into our bedroom.I made sure to make the container airtight so no moisture seeps in.See also: seep
seep in (to something)
[for a fluid] to trickle or leak out of something. Water is seeping into the basement. Water is seeping in very slowly.See also: seep