Synonyms for sponge

noun

• someone able to acquire new knowledge and skills rapidly and easily
• a follower who hangs around a host (without benefit to the host) in hope of gain or advantage
• primitive multicellular marine animal whose porous body is supported by a fibrous skeletal framework; usually occurs in sessile colonies
• a porous mass of interlacing fibers that forms the internal skeleton of various marine animals and usable to absorb water or any porous rubber or cellulose product similarly used

verb

• ask for and get free; be a parasite
• erase with a sponge; as of words on a blackboard
• gather sponges, in the ocean
• soak up with a sponge
• wipe with a sponge, so as to clean or moisten