There is an umlaut (two dots) over the a. It is German. Lassige with the 2 dots over the a is the German word that means "nonchalantly." It could of course be a last name in Germany too, since in many languages, last names have actual meanings in their language of origin, like in English, for instance, the name Smith is from the occupation of being a blacksmith or other type of smith. I looked for Lassige on several genealogy sites and was unable to find anything there about its country of origin, but I did find the word lassige in a German-English online dictionary.
Which nationality is the surname Green?
The surname Yap is commonly associated with Chinese or Filipino nationality. It is a common surname in both cultures.
The nationality of the surname Beilsmith is half Scotland and half American.
The nationality is Kurdish.
The nationality is Thai.
These days, any surname could be any nationality, but the origin of the surname "MANCHECK" remains obscure.
It is a Hungarian surname.
nationality of the surname "Lokko"
Kallio is a Finnish surname.
Mostaed is an Iranian surname.
Sczcepanik is a Polish surname.
Hopgood is an English surname.