bumpkinly

他在晚宴上笨拙的举止暴露了他乡巴佬的出身。

His clumsy manners at the dinner party revealed his ___bumpkinly origins.

她穿着朴素的棉裙，带着一脸乡巴佬似的纯真笑容。

She wore a plain cotton dress with a ___bumpkinly innocent smile.

这个村庄的婚礼保持着一种质朴而乡巴佬式的气氛。

The village wedding kept a rustic and ___bumpkinly atmosphere.