Sọ̀rọ̀ SókèThe People’s
Yorùbá Dictionary
rẹ́rìn-ín verb /ɾɛ́.ꜜɾĩ́/
Definitions
  1. to laugh
  2. to smile
Etymology
From rín (“to laugh; smile”) + ẹ̀rín (“laugh; smile”).
Component words
rínto laugh; smileẹ̀rínlaugh; smile
Source: Wiktionary, where this word is spelled “rẹrin-in”. Reference: en-rẹrin-in-yo-verb-hAh7OITr