Heaven spelled backwards
Nevayah is a modern American invention, created by reversing the letters of the word 'Heaven'. It is a creative variation of the name Nevaeh, which gained massive popularity in the early 2000s. The addition of the 'y' and 'a' at the end gives it a more phonetic, lyrical quality common in contemporary naming trends.
Less common today
Nevayah isn't in the latest US Top 1000. It last peaked at #4,731 in 2010.
US births per 5-year period, 1990βpresent (SSA data).