11 letters · 25 points in Scrabble
adjective having a strong affinity for water; tending to dissolve in, mix with, or be wetted by water
originEtymology tree Proto-Indo-European *wed- Proto-Indo-European *-r̥ Proto-Indo-European *wódr̥ Proto-Hellenic *údōr Ancient Greek ῡ̆̔́δωρ (hū̆́dōr) Ancient Greek ῠ̔δρο- (hŭdro-)der. English hydro- English -philic English hydrophilic From hydro- + -philic.
Etymology from Wiktionary, CC BY-SA 3.0