Where does “arsonphobia” come from?

arsonphobia (English) comes from English arson, from Old French arson, from Old French ardre, from Latin ārdeō, from Latin ardus, from Latin āridus, from Latin āreō, from Proto-Italic āzēō — to be/become dry; to burn, to glow; hearth.

arsonphobia (English): pyrophobia

Definitions

  1. pyrophobia

Ancestry of “arsonphobia”, step by step

arsonphobia traces back through two separate lines of ancestry.

via English arson

StepLanguageWordMeaning
1EnglisharsonThe crime of deliberately starting a fire with...
2Old Frencharsonburning; fire; arson; sunburn
3Old Frenchardrealternative infinitive of ardoir
4Latinārdeōto burn
5LatinardusAlternative form of aridus
6Latināridusdry, parched, withered, arid
7Latināreōto be dry or parched
8Proto-ItalicāzēōI am dry
9Proto-Indo-Europeanh₂eHseh₁(ye)-
10Proto-Indo-Europeanh₂eHs-to be/become dry; to burn, to glow; hearth

via English Phobia

StepLanguageWordMeaning
1EnglishPhobiaAn irrational, abnormal, or obsessive fear (of something)
2Ancient GreekΦόβοςmythological personification of fear
3Proto-Indo-Europeanbʰegʷ-to flee; to run
Every word from Proto-Indo-European h₂eHs-