Free man or noble
A modern American blend likely combining the Germanic name Carl with the suffix -issa, often associated with Melissa. It carries the root meaning of 'free man' from Carl, while taking on a more feminine, melodic quality through its construction.
Less common today
Carlissa isn't in the latest US Top 1000. It last peaked at #4,014 in 1992.
US births per 5-year period, 1990βpresent (SSA data).