phengophobia

Etymology

From Ancient Greek φέγγος (phéngos, “light, glow”) + -phobia.

Why this word is great

PHENGOPHOBIA — Noun. An aversion to or fear of daylight or sunshine. From Ancient Greek φέγγος (phéngos, "light, glow") + -phobia ("fear of"). Unlike heliophobia, which narrows its terror to the sun’s disk alone, phengophobia casts a wider shadow, recoiling from daylight in all its diffused, creeping forms—the pale wash of dawn, the glare of noon, even the muted glow of an overcast sky. It also differs from photophobia, a physiological wince at light’s assault on the eyes; phengophobia lingers in the mind, a dread of the day’s exposure, as if sunshine might peel back the safety of dim corners. The afflicted might shutter their windows, pace the house at dusk, or flinch at the first blush of morning—not from pain, but from the quiet horror of being seen, of secrets laid bare by the world’s oldest witness. Daylight, to them, is not illumination but accusation.

noun

  1. aversion to daylight“This new artificial 'pupil' can attenuate symptoms such as glare and phengophobia (Fig. 4).”