Triskaidekaphobia ( , ; ) is fear or avoidance of the number . It is also a reason for the fear of Friday the 13th, called paraskevidekatriaphobia () or friggatriskaidekaphobia ().
tRiSKaidekaphobiA (  ; ) IS FEar Or AvoiDaNce oF tHe NuMBer  it is alsO A reASon FoR the feAr of FrIday the 13Th CalLed ParaskevidekATriapHoBia () or FRIggatriskAidekaPHObiA ()