下面的几个单词都以”under-“前缀（prefix）开头，且属于常用单词，对这些词汇的掌握及灵活使用能让你的英语口语、书面表达变得更加地道、准确。我把这些单词放在一起，目的是便于大家进行辨别、记忆。闲话少说（without further ado），我们来看看这些词：

（1）underestimate（v.低估）

例句：In this sort of case you would always rather overestimate than underestimate.

（2）undersell（v.看轻、廉价出售）

例句：”Don’t undersell yourself.”

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（3）understatement（n. 含蓄、保守的陈述）

例句：Saying “We’ve had a little rain,” when the neighborhood is flooded. Now that is an understatement.

（4）underpin（v. 从底部支撑）

例句：The author’s conclusions are underpinned by references to experimental findings.

（5）underwriting（(1)n. 承保，为…提供保险。(2)underwrite的现在分词。Underwrite这个词的构成，源自于承保人在所有列出的风险内容下（under）签名（write），承诺当上述风险发生时予以赔付的做法。）

例句：An insurance company underwrites your policy when it agrees to take the risk of insuring your life or covering your medical expenses in exchange for the premium you pay.

（6）undergo（v. 经历。同义词：experience, endure）

例句：Many others who survived suffered severe frostbite and have had or soon will undergo amputations.

（7）underrate（v. 评价过低（与实际表现不服））

例句：Obviously, this movie is hugely underrated. It should’ve gotten a higher score.