1. (

• extra ,
• duplicate ,

) something additional of the same kind; "he always carried extras in case of an emergency" ;

2. (

• duplicate ,
• duplication

) a copy that corresponds to an original exactly; "he made a duplicate for the files" ;

1. (

• duplicate ,
• reduplicate ,
• double ,
• repeat ,
• replicate

) make or do or perform again; "He could never replicate his brilliant performance of the magic trick" ;

2. (

• twin ,
• duplicate ,
• parallel ,

) duplicate or match; "The polished surface twinned his face and chest in reverse" ;

3. (

• duplicate ,

) make a duplicate or duplicates of; "Could you please duplicate this letter for me?" ;

4. (

• double ,
• duplicate

) increase twofold; "The population doubled within 50 years" ;

1. (

• duplicate

) identically copied from an original; "a duplicate key" ;

2. (

• duplicate ,
• matching ,
• twin ,
• twinned

) being two identical ;