Bumpkin is a disparaging term for someone who’s unsophisticated and lacks social grace. This word is most commonly applied to people who live in the country, away from cultural events and urban life.
A stereotypical bumpkin is uneducated, not well read and not particularly interested in the wider world. Before you write someone off as a bumpkin, you should probably get to know them better: this is a word that’s firmly rooted in stereotypes and often erroneous assumptions. According to etymologists, bumpkin derives from a Dutch word that means “small barrel.”