反义词是secure，例如：
1.First thing I'd do is secure the black box.首先我会保护黑盒
2.He called Michael in to help him secure the rest.他叫迈克尔帮他保护好剩下的黑盒
3.At last they were able to feel secure about the future.他们终于觉得不必为将来而担忧了。
adventure的反义词
可靠, 稳妥, 踏实, 稳当
1稳当
英语:reliable, safe, secure
2踏实
英语:free from anxiety, sureness
