If you say that a statement is an understatement, you mean that it does not fully express the extent to which something is true.
例句
To say I'm disappointed is an understatement...說我失望那是說得太輕了。He was getting very hard to live with, and that's the understatement of the year.說他很不好相處，那簡(jiǎn)直是說得太客氣了。
N-UNCOUNT
輕描淡寫；重事輕說；淡化
Understatement is the practice of suggesting that things have much less of a particular quality than they really have.
例句
He informed us with massive understatement that he was feeling disappointed.他極力輕描淡寫地跟我們說他感到失望。...typical British understatement.典型的英國(guó)式輕描淡寫
英漢詞典釋義
n.
重事輕說;輕描淡寫
To say he wasn’t amused must be the understatement of the year.說他不感興趣肯定說輕了。‘A little strange’ is a gross understatement.“有一點(diǎn)奇怪”絕對(duì)是輕描淡寫。
英英詞典釋義
Noun
1. a statement that is restrained in ironic contrast to what might have been said