Origin: Greek prefix hydro-
Hydrophobic has 4 different meanings across 1 category:
lacking affinity for water; tending to repel and not absorb water; tending not to dissolve in or mix with or be wetted by water
abnormally afraid of water
Of, or having, hydrophobia (rabies).
Lacking an affinity for water; unable to absorb, or be wetted by water.