unintelligent behavior 不明智的行为
unintelligent decision 不明智的决定
highly unintelligent 非常愚蠢的
A: Do you think his plan is unintelligent?
A：你觉得他的计划不明智吗？
B: Yes, it lacks any logical reasoning.
B：是的，它缺乏逻辑推理。
1) lacking intelligence
2) not smart or clever
3) lacking mental capacity
1. 不聪明的，愚蠢的
adjective
1. lacking intelligence or the ability to learn
Synonym: stupid, foolish, unwise