unsound
🇺🇸
/ˌʌnˈsaʊnd/
🇬🇧
/ˌʌnˈsaʊnd/
not solid or stable; could easily break or fall apart
The old bridge was unsound and dangerous to cross.
这座旧桥不牢固,过桥危险。
not sensible or reasonable; not based on good thinking or facts
It's unsound to make such a big decision without considering all the facts.
不考虑所有事实就做出如此重大的决定是不明智的。
not correct or reliable; full of mistakes
The plan was unsound and failed to achieve its goals.
这个计划不切实际,未能实现其目标。