underachieve

音标发音

Children of the poor underachieve in later life, and thus remain poor themselves, is one of the enduring problems of society。
貧睏的兒童在以後的生活裡表現不佳，之後便一直貧睏，這是一個持續的社會問題。
edu.sina.com.cn
Boys may underachieve because they pick up on teachers' assumptions that they will obtain lower results than girls and have less drive.
男孩表現不如理想可能是因爲他們接受了老師認爲他們比女孩成勣稍遜的看法，而缺乏努力的動力。
Discover how their current patient education materials and processes may underachieve and test improvements.
目前發現他們是如何耐心教育的材料和工藝的改進和測試可能學習成勣不良。

Countries as huge and complicated as China can underachieve or collapse under their own contradictions.
ECONOMIST: China and India
These can lead both children and adults to underachieve at school, at work, in relationships and marriage, and in all other settings.
NPR: Excerpt: 'Delivered from Distraction'
It seemed the right kind of place to underachieve in hedonistic peace.
NEWYORKER: Booted

If someone underachieves in something such as schoolwork or a job, they do not perform as well as they could.
underachiever