Finnish - “Lentokonesuihkuturbiinimoottoriapumekaanikkoaliupseerioppilas” - (something to do with the Finnish Air Force. Hard to translate but impressively long)
Icelandic - “Vaðlaheiðarvegavinnuverkfærageymsluskúraútidyralyklakippuhringur” - key ring of the key chain of the outer door to the storage tool shed of the road workers on the Vaðlaheiði plateau (Icelandic isn’t even really an agglutinative language which makes this even more impressive)
Turkish - “Muvaffakiyetsizleştiricileştiriveremeyebileceklerimizdenmişsinizcesine” - as though you are from those we may not be able to easily make a number of unsuccessful ones
And then the longest word is, of course, German. It’s 79 letters long and almost impossible to use in context:
German - “Donaudampfschiffahrtselektrizitätenhauptbetriebswerk-bauunterbeamtengesellschaft” - Association for subordinate officials of the head office management of the Danube steamboat electrical services.
If you know any more impressively long words that I missed, please let me know so I can add them!
May our Lord in Heaven bless you on this blessed day of your birth and provide you with peace love fortune good health and prosperity may you live a long and happy life and may your great grandchildren remember you fondly