An excessive or abnormal sensitivity to sounds, especially water sounds or liquid-related noises.
From Latin acqua (water) combined with Greek -phonia (sound). This is a rare psychological or medical term describing heightened auditory sensitivity to water-related sounds specifically.
Acquophonia isn't in most dictionaries because it's such a specialized term—it represents how modern medicine creates precise labels for specific conditions by combining roots from different languages, showing how English borrows from Latin and Greek to describe human experiences.
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