Keili is of Finnish origin, meaning 'beautiful wave'. It's often associated with grace and fluidity, much like its namesake in nature.
The name Keili experienced varied popularity over the years with a significant spike between 2001 and 2003, reaching its peak in 2002 with 24 births each year. After this period, the number of babies named Keili began to decline, returning to single digits by 2016 and remaining there until at least 2020. Overall, there were a total of 406 children named Keili between 1980 and 2020.