Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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English abstruse
German abstrus (cognate)
French abstrus (borrowed)
Proto-Indo-European *trewd- (root)
Latin abstrūsus (borrowed)
Latin abstrūdō (mention)
Latin ab (mention)
Latin abs (mention)
Latin trūdō (mention)

English abstrude (mention)
English abstrusely (suffix)
English abstruseness (suffix)
English abstrusion (mention)
English abstrusity (suffix)
English abstrusive (suffix)