de·fy 
/dɪˈfaɪ/ verb
de·fies; de·fied; de·fy·ing /dɪˈfaɪ/ verb [+ obj] 1 : to refuse to obey (something or someone)
▪ She defied her parents and dropped out of school. 2 : to make (something) very difficult or impossible
▪ The article defies a simple summary. [=the article cannot be explained by a simple summary] ▪ views of nature that defy belief/description [=that are hard to believe/describe] 3 : to resist or fight (something)
▪ The group has continued to defy all efforts to stop them. 4 : to go against (something)
▪ The team defied the odds [=did something that was very unlikely] and won the championship. ▪ an explanation that defies all logic [=an explanation that does not make any sense] 5 : to tell (someone) to do something that you think cannot be done
▪ I defy you to prove that I lied. ▪ I defy anyone to name a better film. [=I do not think that anyone can name a better film; I do not think that there is a better film]
▪ She defied her parents and dropped out of school.
▪ The article defies a simple summary. [=the article cannot be explained by a simple summary] ▪ views of nature that defy belief/description [=that are hard to believe/describe]
▪ The group has continued to defy all efforts to stop them.
▪ The team defied the odds [=did something that was very unlikely] and won the championship. ▪ an explanation that defies all logic [=an explanation that does not make any sense]
▪ I defy you to prove that I lied. ▪ I defy anyone to name a better film. [=I do not think that anyone can name a better film; I do not think that there is a better film]
