Superstitions

noun a strong belief in something without any evidence or proof

adjective describing a belief that is not based on evidence or proof

• The cult leader manipulated his followers into having blind faith in his teachings.
• She had blind faith that everything would work out in the end.
• I can't believe you're putting blind faith in that sketchy website.
• Putting blind faith in luck is not a reliable strategy for success.

noun a person who has a fear of Friday the 13th

adjective describing a person who has a fear of Friday the 13th

• The paraskevidekatriaphobic individual avoids making any important decisions on Friday the 13th.
• My friend who is paraskevidekatriaphobic refuses to leave the house on Friday the 13th.
• I didn't realize you were paraskevidekatriaphobic, that explains why you called in sick today!
• Being paraskevidekatriaphobic is like carrying an invisible shield on Friday the 13th.