17 letters · 33 points in Scrabble
noun a morbid fear of the number 13
originEtymology 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.
Etymology from Wiktionary, CC BY-SA 3.0