Modern American creation, possibly meaning born on Monday or ambitious
Tarnisha is a modern American name that emerged in the late 20th century. It is likely a blend of the prefix 'Tar-' with the name Nisha, which has Sanskrit roots meaning 'night', or a variation of the name Tanisha, which is sometimes linked to the Hausa day-name for Monday.
Less common today
Tarnisha isn't in the latest US Top 1000. It last peaked at #5,627 in 1992.
US births per 5-year period, 1990βpresent (SSA data).