uncouth重點(diǎn)在于外表舉止，其它幾個(gè)近義詞的區(qū)別好像沒有之前單元的分明，

vulgar→not suitable, simple, dignified or beautiful; not in the style preferred by the upper classes of society.

uncivilized→not suitable for a well developed, peaceful society where people are treated fairly.

refined→very polite and showing knowledge of social rules.