unpriggish
/ˌənˈprɪdʒɪʃ/Definitions
1. adjective
lacking the qualities of a prig; not prudish or self-righteously moralistic
“The comedian’s unpriggish humor resonated with his audience.”
2. adverb
in a way that lacks the qualities of a prig; not prudish or self-righteously moralistic
“He spoke unpriggishly about the difficult topic, avoiding judgment.”