na-adjective
popular; folksy; unpretentious; plebeian
Describes something that is accessible, down-to-earth, or characteristic of ordinary people rather than the elite. Often positive, but can carry a nuance of being common or unsophisticated depending on context.
彼の庶民的な人柄が人気の理由だ。
His down-to-earth personality is the reason for his popularity.
この店は庶民的な雰囲気で、気軽に入れる。
This shop has a folksy atmosphere and is easy to drop into.
大衆的 also means 'popular' or 'for the masses', but often emphasizes mass appeal or commercial popularity, while 庶民的 focuses more on a down-to-earth, unpretentious quality.
Derived from 庶民 (common people) + the adjectival suffix 的 (-like, -ish). The word 庶民 itself is composed of 庶 (common, numerous) and 民 (people).