Ice; frozen water
A modern phonetic spelling of the word 'ice', suggesting a cool, crystalline, or wintery nature. It is a creative variation of the name Isis or the word 'icy', often chosen for its unique visual style and contemporary sound.
Less common today
Icyss isn't in the latest US Top 1000. It last peaked at #8,311 in 2005.
US births per 5-year period, 1990βpresent (SSA data).