defiance

But Sophia's mother was not the woman to brook defiance. After a few moments' vain remonstrance her husband complied. His manner and appearance were suggestive of a satiated sea-lion.

Ambassador Udina: The other species are scared. They've never faced anything like this before and they don't know what to do. They want us to step foward. They believe in humanity because of you.

Ambassador Udina: Your ruthless pursuit of Saren and the geth, your defiance of the Council -- that's what humans are capable of! That's how we can defeat the Reapers!