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Old English fæder (inherited)
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Middle English fader (inherited)
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North Frisian faaðer (cognate)
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West Frisian faar (cognate)
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Proto-Germanic *fadēr (inherited)
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Ancient Greek πατήρ (mention)
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Armenian հայր (mention)
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Proto-Indo-European *ph₂tḗr (inherited)
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Low German Fader (cognate)
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Sanskrit पितृ (mention)
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Tocharian B pācer (mention)
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Tocharian A pācar (cognate)