The fear of gaiety or fun is known as cherophobia.

The fear of gaiety (fun) is known as cherophobia

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The fear of feeling pleasure is known as hedonophobia

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The fear of accidents is known as dystychiphobia

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The fear of bicycles is known as cyclophobia

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Scopophobia is the fear of being stared at

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Homichlophobia is the fear of fog

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The fear of reptiles is known as herpetophobia