Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
French muet
Middle French mut (inherited)
Middle French muet (mention)
Old French mu (inherited)
Old French mut (mention)
Old French mui (mention)
Latin mūtus (inherited)

French h muet (mention)
French muettement (suffix)
French amuïr (confix)
Vietnamese câm (semantic loan)