The story
- Proto-Indo-European*peh₂ḱ-
- Proto-Indo-European*péh₂ḱs
- Proto-Italic*pāks
- Latinpāx
- Latinpācō
- Old Frenchpaiier
- Middle Englishpayen
- Englishpay
- Proto-Indo-European*tek-
- Proto-Indo-Iranian*kšáyati
- Proto-Iranian*xšáyati
- Old Persian𐏋 (XŠ)
- Middle Persian𐭬𐭫𐭪𐭠 (mlkʾ /šāh/)
- Classical Persianشاه (šāh)
- Medieval Latinscaccus
- Old Frencheschec
- Middle Englishchek
- Englishcheck
- English todaypaycheck
From pay (“wages or salary”) + check (“a means of payment”).
Etymology from Wiktionary, CC BY-SA 4.0.