Reili is of Estonian origin, derived from the word 'reil', meaning 'fine' or 'good'. It is a unisex name, but it's more commonly used as a female name in Estonia and among the Estonian diaspora. The name Reili has been gaining popularity in recent years, ranking among the top 100 baby names in Estonia since 2010. Internationally, it remains relatively uncommon, adding to its uniqueness.
The name Reili had a boom year in 2006 with six births, bringing its total to six.