Of the sea; combination name
Demarri is a modern American creation, likely formed by combining the popular prefix 'De-' with the name Marri or a variation of the Latin root 'mare', meaning sea. It follows the rhythmic pattern of names like Demari or Damari, which have roots in various cultures but are often chosen for their contemporary sound.
Less common today
Demarri isn't in the latest US Top 1000. It last peaked at #7,018 in 2018.
US births per 5-year period, 1990βpresent (SSA data).