ẹ̀san noun /ɛ̀.sã̄/
Definitions
  1. revenge, payback, repayment
Etymology
ẹ̀- (“nominalizing prefix”) + san (“to repay, to pay”)
Component words
ẹ̀-nominalizing prefixsanto repay, to pay
Source: Wiktionary · etymology 2, where this word is spelled “ẹsan”. Reference: en-ẹsan-yo-noun-Phu0filo