To deem means to consider, to judge or to have as an opinion. It is a formal word, more commonly found in written English and particularly in contracts, newspapers articles and essays.
Look at the following examples of the usage of the verb to deem :
"The authorities have deemed it wise to intervene in this case."
"I hope that my application will be deemed worthy of consideration".
"Do you really deem it necessary to make such drastic changes ?"
