1. Make a duplicate or duplicates of
   "Could you please duplicate this letter for me?"
    
2. Make, do or perform again
   "He could never duplicate his brilliant performance of the magic trick";
   - reduplicate, double, repeat, replicate
    
3. Duplicate or match
   "The polished surface duplicated his face and chest in reverse";
   - twin, parallel
    
4. Increase twofold
   "The company duplicated its workforce over the year";
   - double

1. A copy that corresponds to an original exactly
   "he made a duplicate for the files";
   - duplication
    
2. Something additional of the same kind
   "he always carried duplicates in case of an emergency";
   - extra

1. Identically copied from an original
   "a duplicate key"
    
2. Being the same, or having similar design, colour, etc, as another
   "The duplicate vases were perfect for the symmetrical arrangement";
   - matching, twin, twinned

Derived forms: duplicates, duplicating, duplicated

See also: matched, same

Type of: agree, artefact [Brit], artifact [N. Amer], check, copy, correspond, fit, gibe, jibe, manifold, marry, marry up, match, multiply, reproduce, square, tally

Encyclopedia: Duplicate