Kaiserist
/ˈkʌɪz(ə)rɪst/originally and chiefly US. Now historical
noun
An adherent or supporter of Kaiserism; (sometimes) specifically (depreciative ) a person supporting Germany in the First World War (1914–18); a pro-German.
adjective
Relating to, characterized by, or supporting Kaiserism.
Origin
Late 19th century; earliest use found in The St. Louis Post-Dispatch. From Kaiser + -ist, after Kaiserism.