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Old English helma (inherited)
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Old English helm (inherited)
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Middle English helm (inherited)
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Middle English helme (mention)
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Middle English helm (inherited)
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West Frisian helm (cognate)
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Proto-Germanic *helmô (inherited)
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Proto-Germanic *helmaz (inherited)
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Proto-West Germanic *helm (inherited)
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Proto-Indo-European *ḱelmos (inherited)
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Proto-Indo-European *ḱel- (derived)
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Low German Helm (cognate)
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Norwegian hjelm (cognate)
→
Luxembourgish Helm (cognate)
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Norwegian Bokmål ror (link)
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Norwegian Nynorsk hjelm (cognate)