"Plain folks" is a term used to describe individuals who are unassuming, modest, and down-to-earth. There are several synonyms that can be used to convey similar meanings to this term. One such synonym is "ordinary people," which encompasses the idea of individuals who are not particularly noteworthy or exceptional. "Everyday folks" is another synonym that can be used to describe individuals who are unpretentious and unremarkable. "Rustic folk" is a term that can be used to describe people who hail from rural areas or who have a simple and uncomplicated way of life. Finally, "common folk" is another synonym that can be used to describe individuals who are not particularly affluent or high-status.