"likes water"
Water soluble
having an affinity for water
antonym is "hydrophobic" (phobic = fear)
http://dictionary.reference.com/search?r=2&q=hydrophilic
hydrophobic things are fats, oils, etc.

Just about any lame-brained dictionary will have a definition for that.
Posters hould have the courtesey to do at least a little bit for themselves
before posting.

Bill