Scottish from bon (good); conveys cheerfulness, beauty, and warm Scottish heritage
Vibe
gentle
How it ages.
Bonnie was popular in English-speaking countries from 1920s-1970s and has faded as naming preferences evolved.
The cultural moment.
US and UK show decline from mid-20th century peak; Australia and Canada follow; minimal contemporary adoption. Currently ranks #47 in the UK and #64 in Ireland.