Where does “triskaidecaphobia” come from?

triskaidecaphobia (English) comes from English Phobia, from Ancient Greek Φόβος, from Proto-Indo-European bʰegʷ- — to flee; to run.

Ancestry of “triskaidecaphobia”, step by step

triskaidecaphobia traces back through two separate lines of ancestry.

via English Phobia

StepLanguageWordMeaning
1EnglishPhobiaAn irrational, abnormal, or obsessive fear (of something)
2Ancient GreekΦόβοςmythological personification of fear
3Proto-Indo-Europeanbʰegʷ-to flee; to run

via English triskaideca

StepLanguageWordMeaning
1Englishtriskaideca
Every word from Proto-Indo-European bʰegʷ-Every word from Ancient Greek ΦόβοςEvery word from English Phobia
triskaidecaphobia — Etymology, Origin & Word History | Etymology Explorer