What is Fear of old age known as?

Geraphobia

The correct answer is ☀ Geraphobia. Geraphobia is the fear of old age. It is an irrational or disproportionate fear that can cause people to avoid thinking about aging, talking about aging, or even being around elderly people.

The other phobias you mentioned are:

• Hedophobia is the fear of pleasure.
• Logophobia is the fear of words.
• Nyctophobia is the fear of the night.