Combination name; likely a variant of Denisha or Danisha.
Dyneshia is a modern American invented name. It most likely follows the pattern of combining the prefix 'Dy-' with the popular suffix '-neshia', or it serves as a creative spelling of Denisha, which itself is a blend of the prefix 'De-' and the name Aisha.
Less common today
Dyneshia isn't in the latest US Top 1000. It last peaked at #7,368 in 1991.
US births per 5-year period, 1990βpresent (SSA data).