IPA: /ˈpraɪvɪtɪst/
KK: /ˈpraɪvɪtɪst/
The most personal or secret; not shared with others.
She wanted to have the privatest conversation possible, away from prying ears.
Comparative: more private
Superlative: privatest
Privatest → It is formed from "private" (from Latin "privatus", meaning belonging to oneself or personal) and "-est" (a superlative suffix indicating the highest degree). The word "privatest" means the most personal or belonging to oneself to the highest degree.
Think of 'private' as something that belongs to you personally, and '-est' indicates the highest level of that personal nature.