An irrational fear of nudity or of being seen naked, whether one's own nakedness or that of others.
From Greek 'gymnos' (naked) and 'phobos' (fear), literally meaning 'fear of nakedness,' combining the same Greek root as 'gymnasium' with the standard fear suffix.
It's fascinating that the Greeks who created naked gymnasiums also had a word for fearing nudity—it shows that even in cultures we think were 'comfortable' with the body, anxiety about nakedness was real and recognized.
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