Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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English oblige
English obligate (doublet)
Middle English obligen (inherited)
Old French obligier (derived)
Old French obliger (mention)
Proto-Indo-European *leyǵ- (root)
Latin obligo (derived)
Latin ob- (mention)
Latin ligo (mention)

English obligate (doublet)
English obliger (suffix)
English obligor (suffix)
English obligee (suffix)
English obligement (suffix)
English obligable (suffix)
English obligeth (suffix)
English obligest (suffix)
English reoblige (prefix)
English misoblige (prefix)
Spanish obligar (cognate)