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Old English tor- (cognate)
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Old English tō- (mention)
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Middle English tor (cognate)
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Middle English tore (mention)
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Middle English toor (mention)
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Proto-Germanic *tuz- (inherited)
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Old High German zur- (cognate)
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Ancient Greek δυσ- (cognate)
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Proto-Indo-European *dus- (inherited)
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Norwegian Nynorsk tor- (cognate)
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Old Norse tor- (inherited)
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Sanskrit दुस्- (cognate)
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Old Irish do- (cognate)