Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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English dull
Old English dol (inherited)
Danish dval (cognate)
German toll (cognate)
Middle English dull (inherited)
Middle English dul (mention)
Middle English dyll (mention)
Middle English dill (mention)
Middle English dwal (mention)
North Frisian dol (cognate)
Proto-Germanic *dulaz (inherited)
Proto-Germanic *dwalaz (mention)
Proto-Indo-European *dʰwel- (inherited)
Proto-Indo-European *dʰewel- (mention)
Icelandic dulur (cognate)
Low German dul (cognate)
Low German dol (mention)
Dutch dol (cognate)
Scots dull (cognate)
Scots doll (mention)

English flat (link)
English blunt (link)
English dill (mention)
English dolt (link)
English doldrums (mention)
English doldrums (mention)
English dullness (affix)
English dullsville (affix)
English dullard (suffix)
English dully (suffix)
English duller (suffix)
English dullish (suffix)
English doldrum (mention)
English doldrum (mention)
English dull-witted (compound)
English fordull (prefix)
English dullsome (suffix)
English dullhead (compound)
English undull (prefix)
English undull (prefix)
English bedole (prefix)
English dull-headed (compound)
English dullwit (compound)
English dulleth (suffix)
English dullen (suffix)
English Dollard (suffix)
English dullery (affix)
English semidull (prefix)
German toll (cognate)
German toll (mention)
Latin bardus (link)
Norwegian Bokmål dump (link)
Norwegian Nynorsk dump (link)
Portuguese boto (link)
Portuguese boto (link)
Vilamovian duł (cognate)