Where does “seepage” come from?

I need to analyze this etymology chain carefully. The chain given is: English seep | English sipe | Old French -age | Latin -aticum | Proto-Indo-European seyb- | Latin -icus | Proto-Indo-European -kos | Proto-Indo-European -eh₂tos However, this chain seems problematic. "Seepage" is formed from "seep" + "-age" suffix. The chain appears to mix the etymology of "seep" with the etymology of the "-age" suffix, which are separate elements. Let me work with what's most reliable: "seepage" = "seep" + "-age" The "-age" suffix comes from Old French -age, from Latin -aticum (from -atus + -icum). The verb "seep" likely comes from Middle English sepen, possibly related to Old English sīpan or similar roots

seepage (English): The process by which a liquid leaks through a...

Definitions

  1. The process by which a liquid leaks through a...

Ancestry of “seepage”, step by step

StepLanguageWordMeaning
1EnglishseepTo ooze or pass slowly through pores or other...
2EnglishsipeSlit in a tire to drain away surface water and...
3Middle EnglishsipenTo seep, to ooze or pass slowly through pores or...
4Old Englishsipianto seep
5Proto-Germanicsipōnąto drop, fall, drip, trickle
6Proto-Indo-Europeanseyb-to pour, leak, trickle; to pour out, trickle,...

Words derived from “seepage

Every word from Proto-Indo-European seyb-Every word from Proto-Germanic sipōnąEvery word from Old English sipian