It's not quite right. Are there only two conspirators? Are they opposites of each other?
"Juxtapose" is usually used when two ideas or inanimate objects are placed together so their differences and similarities are clear.
http://www.merriam-webster.com/dictionary/juxtapose
http://www.onelook.com/?w=juxtapose&ls=a
http://dictionary.reference.com/browse/juxtapose
Notice the example sentences among these definitions.
does this sentence work and make sense?
It is important that when the conspirators attempt to kill Caesar, they juxtapose themselves so they can communicate easily with one another.
1 answer