Superstition

Definition

• Def: Superstition 1. a belief or notion, not based on reason or knowledge; 2. irrational fear of what is unknown or mysterious, esp. in connection with religion; 3. any blindly accepted belief or notion; 4. an irrational belief that an object, action, or circumstance not logically related to a course of events influences its outcome; 5. Idolatry; 6. an irrational belief arising from ignorance or fear;
  
  

• Origin: 1375–1425; late ME < L superstitiōn- (s. of superstitiō), equiv. to superstit- (s. of superstes) standing beyond, outliving (super- super- + -stit-, comb. form of stat-, adj. deriv. of stāre to stand) + -iōn- -ion;
  
  

• Synonyms: false belief, fear, irrationality, notion, unfounded fear.

Source: Dictionary.com Unabridged