Select the most appropriate word for the given group of words.

An abnormal fear of water

Hydrophobia

The most appropriate word for the given group of words is hydrophobia.

• Cacophobia is a fear of ugliness.
• Hydrophobia is a fear of water.
• Algophobia is a fear of algae.
• Pyrophobia is a fear of fire.

Hydrophobia is the only word on the list that specifically refers to a fear of water. The other words on the list all refer to fears of specific things, but they do not necessarily mean that the fear is of water.