Pure or grace
Annyssa is a modern creative spelling of Anissa, which itself is a variant of Agnes or a diminutive of Anna. It combines the Greek roots for purity with the Hebrew roots for grace, resulting in a unique, contemporary American choice.
Less common today
Annyssa isn't in the latest US Top 1000. It last peaked at #8,939 in 1997.
US births per 5-year period, 1990βpresent (SSA data).