The Collaborative International Dictionary
Decitizenize
Decitizenize \De*cit"i*zen*ize\, v. t. To deprive of the rights of citizenship. [R.]
We have no law -- as the French have -- to decitizenize
a citizen.
--Edw. Bates.
Wiktionary
decitizenize
vb. (context transitive English) To deprive of citizenship.