achluophobia

Definition

The fear of darkness.

Etymology

From Ancient Greek ἀχλύς (akhlús, “darkness”) and -phobia.

Example Sentences

• "If you have a severe case of achluophobia (fear of the dark), for instance, you may want to wait at the mouth of the cave."
• "When I was little, I had achluophobia and had to sleep with some kind light, any kind of light."
• "I'm not exactly sure when I was diagnosed with achluophobia—the fear of darkness—but I've always been afraid to be left alone in the dark."