Priceless one or highly praiseworthy
A modern American elaboration of Antoinette, which is the French feminine diminutive of Antonius. It carries the same historical weight as the Roman clan name, suggesting someone of immense value or beyond praise.
Less common today
Antwanette isn't in the latest US Top 1000. It last peaked at #3,180 in 1991.
US births per 5-year period, 1990βpresent (SSA data).