superstitious notion
— Noun
– English
~ an irrational belief arising from ignorance or fear
superstitious
— Adjective
– English
~ showing ignorance of the laws of nature and faith in magic or chance; "finally realized that the horror he felt was superstitious in origin"
superstitiously
— Adverb
– English
~ in a superstitious manner; "superstitiously he refused to travel on Friday the 13th"