Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
English mumble
German mümmeln (cognate)
Middle Dutch mommelen (cognate)
English mum#Etymology 3 (mention)
Middle English momelen (derived)
Dutch mompelen (cognate)

English mutter (link)
English mutter (link)
English mumblety peg (compound)
English mumbler (suffix)
English mumbleth (suffix)
English mumbly (suffix)
English mumblecore (suffix)
English mumblenews (compound)
English mumblest (suffix)
English mumblage (suffix)
English mumblesome (suffix)
English mumblement (suffix)
English mumble-matins (compound)
English mumble rap (mention)
English mismumble (prefix)
German vermummen (mention)
German mümmeln (cognate)
Dutch mompelen (cognate)