insufficiency
US /ˌɪn.səˈfɪʃ.ən.si/
UK /ˌɪn.səˈfɪʃ.ən.si/

1.
不足, 缺乏, 不够
the quality of being inadequate or insufficient
:
•
The insufficiency of funds led to the project's delay.
资金不足导致项目延期。
•
There was an insufficiency of evidence to convict him.
证据不足以给他定罪。