Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Old Church Slavonic отъ
Proto-Slavic *otъ (inherited)

Old Church Slavonic отрокъ (prefix)
Old Church Slavonic отъѧти (prefix)
Old Church Slavonic отъврѣщи (prefix)
Old Church Slavonic отъпоустити (link)
Old Church Slavonic отълѫчити (prefix)
Old Church Slavonic отъринѫти (prefix)
Old Church Slavonic отърещи (prefix)
Old Church Slavonic отъвратити (prefix)
Old Church Slavonic отъкрꙑти (prefix)
Lower Sorbian wót (cognate)
Ancient Greek ἔτι (cognate)