The best replacement for hydrophobia is aquaphobia.

The best alternatives to hydrophobia are rated as following:
★★★★★  aquaphobia
★★  rabies
★  hydrophobia prophecy
★  lyssa

Your alternative for hydrophobia is not listed? Suggest!
Speaking about hydrophobia, one probably shouldn't forget about rabies.

Other search terms related to hydrophobia and their ratings are:
★★★★★ rabies
You have in mind a companion for hydrophobia and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of hydrophobia in all years. Click on graph for more.
hydrophobia
aquaphobia
rabies