feeble
adjective uk/ˈfiː.bəl/ us/ˈfiː.bəl/
C2 虚弱的；衰弱的，无力的
weak and without energy, strength, or power
He was a feeble, helpless old man. 他是一个虚弱无助的老人。
The little lamp gave only a feeble light. 这盏小灯只发出一点微弱的光。
Opposition to the plan was rather feeble. 对这个计划的反对声相当无力。
C2 无效的；不佳的
not effective or good
a feeble joke/excuse 干巴巴的笑话／站不住脚的借口