superstition

a belief that certain things can cause good or bad luck, especially if you do something by chance

superstición

• have a superstition about something

Collocations a superstition about breaking mirrors · a superstition about walking under ladders

• Many people have the superstition that breaking a mirror brings seven years of bad luck.

  Muchas personas tienen la superstición de que romper un espejo trae siete años de mala suerte.

an idea or belief that is not based on reason or knowledge and is therefore considered to be wrong or silly

idea absurda, creencia sin fundamento

• a superstition about something

Collocations an idea that is a superstition · a belief that is a superstition

• It's just an old superstition, but many people still believe it.

  Es solo una vieja superstición, pero muchas personas aún la creen.