triskaidekaphobia

noun

Etymology: Etymology tree English triskaideka- Proto-Indo-European *bʰegʷ- Ancient Greek φόβος (phóbos) Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂ Proto-Indo-European *-i-eh₂ Proto-Hellenic *-íā Ancient Greek -ῐ́ᾱ (-ĭ́ā) Ancient Greek -φοβία (-phobía)der. Latin New Latinbor. English -phobia English triskaidekaphobia From triskaideka- (“thirteen”) + -phobia.

1. Fear or dislike of the number thirteen (13).

   “Yet, despite beliefs that triskaidekaphobia began long ago and has been passed down through the centuries, the earliest known reference to Friday the 13th as a dreaded day did not appear until 1913. It is merely a 20th century invention.”

   “The great Austrian-American composer Arnold Schoenberg had such a severe case of triskaidekaphobia (the fear of the number 13), he omitted numbering the 13th measure in some of his later works, substituting it with the notation “12a.””