Decaphobia

Decaphobia (from deca, Greek for "ten") is the fear of number 10. One of the reasons for the fear could be that the Roman numeral for ten is X, which the letter represents nothingness or something unknown. The fear can be caused by negative plea feelings of other having scores of 10/10 in games (especially when the self couldn't achieve it) as well as in ratings.

Decaphobia is more readily suffered by religious people, especially by Jews and Christians as they are based by the.