1. 不安全的
2. 危险的
3. 靠不住的
4. 不安稳的
5. 不稳妥的

1. lacking in security or safety;

   "his fortune was increasingly insecure"
   "an insecure future"
   

2. involving or causing danger or risk; liable to hurt or harm;

   "a dangerous criminal"
   "a dangerous bridge"
   "unemployment reached dangerous proportions"
   

3. not safe from attack

1.不安全的；危险的
If a building, machine, activity, or area isunsafe, it is dangerous.

e.g. Critics claim the trucks areunsafe...
批评家声称这些卡车很危险。
e.g. She was also warned it wasunsafe to run early in the morning in the neighbourhood.
她还被告诫大清早在附近跑步是不安全的。

2.身处险境的
If you areunsafe, you are in danger of being harmed.

unsafe的意思

e.g. In the larger neighbourhood, I felt veryunsafe.
在大一点的小区里，我感到很不安全。

3.证据不足的;证据不可靠的
If a criminal conviction isunsafe, it is not based on enough evidence or is based on false evidence.

unsafe的反义词

e.g. An appeal court decided their convictions wereunsafe.
上诉法庭裁定对他们的判罪证据不足。

1. 不安全的：安全的(Safe with exceptions) 除了一些特殊情况不安全的(unsafe) 在多线程程序中使用这个函数是不安全的,除非由程序保证一次只有一个线程调用相应函数库中的函数多线程安全的(MT-Safe) 这个函数对于多线程程序来说是安全的,

2. 扫描潜在的不安全应用程序：--no-adware 不扫描广告软件/间谍软件/风险软件 | --unsafe 扫描潜在的不安全应用程序 | --no-unsafe 不扫描潜在的不安全应用程序