1. With the involvement of two parties or governments
   "they worked out an agreement bilaterally" 
2. So as to involve two sides or parts

See also: bilateral

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• ununquadium
• ununtrium
• unusable
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• unusefulness
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• unusual person
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• unusualness
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• unutterably
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• unvaccinated
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• unvanquishable
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• unvariedness
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• unveiled