Tanaisha is of African origin, derived from the Swahili language. It means "God is merciful." This name has gained popularity in recent years due to its unique sound and meaning. Tanaisha consists of two distinct parts: "Tana," which can be associated with the lake of the same name in Kenya, and "isha," a common element in many African names that signifies "God" or "godlike." The name Tanaisha is often used for girls but could also potentially suit boys. It has a rhythmic flow, ending with a soft 'a' sound which makes it pleasant to say aloud.
The name Tanaisha experienced peaks of popularity in the early to mid-1990s, with a notable high of 21 births recorded in 1993. However, its usage has since declined, with fewer than 10 births per year from 1995 onwards and a total of 235 births across these years.