Alt
Germanic
Old, senior
Alt in German simply means 'old'. It was used as a form of title, like we would use Sr. or Senior after a name. It is also a short form for a lot of names beginning with the letters 'alt'.
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Marmaduke Kenyon , Legolas , stinky , Sophia , Nelinha , Felicidad , Drina , moxie , Zoya