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un·ster·ile | \ ˌən-ˈster-əl 
, chiefly British -ˌī(-ə)l \
, chiefly British -ˌī(-ə)l \Definition of unsterile
: not free from living organisms and microorganisms : not sterile an unsterile instrument an operation done in an unsterile environment
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Time Traveler for unsterile
The first known use of unsterile was circa 1934
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