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Adjective: hydrophobic  ,hI-dru'fow-bik
  1. (chemistry) lacking affinity for water; tending to repel and not absorb water; tending not to dissolve in or mix with or be wetted by water
  2. Abnormally afraid of water
    - aquaphobic

See also: afraid, 'fraid [non-standard]

Antonym: hydrophilic

Encyclopedia: Hydrophobic