“冗言的” 较为贴切的英文表达可以是 “verbose in speech” (侧重描述说话方面冗长啰嗦 )或 “redundant in expression”(侧重表达上冗余) ,具体使用可根据语境选择。例如:
He is verbose in speech, often using redundant words.(他说话冗言,经常使用多余的词汇 。)
The writer tends to be redundant in expression, making the text lengthy.(这位作者在表达上冗言,使得文章篇幅冗长 。)