Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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English darken
Old English *deorcnian (derived)
Old English *diercnian (mention)
English dark (affix)
English -en (affix)
Middle English derkenen (inherited)
Middle English dirkenen (mention)
Middle High German terken (cognate)
Middle High German derken (mention)
Proto-West Germanic *dirkinōn (inherited)
Old High German tarchanjan (cognate)
Old High German terchinen (mention)
Scots derken (cognate)
Scots durken (mention)

English dark (link)
English endarken (prefix)
English darkener (suffix)
English bedarken (prefix)
English darkeneth (suffix)
English darkenest (suffix)
English redarken (prefix)
Latin nubilo (link)
Norwegian Bokmål dekke (link)