to complete
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to complete
To complete something by adding the missing parts or bringing a collection to completion.
Mit dieser seltenen Münze konnte er endlich seine Sammlung komplettieren.
With this rare coin, he was finally able to complete his collection.
The verb 'komplettieren' (to complete) is derived from the adjective 'komplett' (complete). The ending '-ieren' turns it into a verb that describes the action of making something complete.
Mit dem neuen Stürmer konnte die Mannschaft endlich komplettiert werden.
With the new striker, the team could finally be completed.
'Komplettieren' (to complete) is a transitive verb and always requires an accusative object. You always complete 'etwas' (something).
Ich brauche nur noch ein Puzzleteil, um das Bild zu komplettieren.
I only need one more puzzle piece to complete the picture.
This verb is often used in contexts involving collections, groups, or sets. Typical objects are: a collection, a team, a set, or a series.
Mit diesem Band komplettiert er seine Buchreihe.
With this volume, he completes his book series.
'Komplettieren' (to complete) belongs more to written language or an elevated style. It sounds more formal than, for example, 'vervollständigen' (to complete) or 'fertig machen' (to finish).
Der Bericht wird durch die neuesten Zahlen komplettiert.
The report is completed by the latest figures.
to add / supplement
Ergänzen and komplettieren both refer to adding a part. Ergänzen can also simply provide an additional piece of information. Komplettieren places more emphasis on adding the last missing part, thereby bringing something, especially a collection or compilation, to completion.
Mit dem letzten fehlenden Namen komplettiert sie die Teilnehmerliste.
She completes the participant list with the last missing name.
Sie ergänzt die Teilnehmerliste um eine weitere Telefonnummer.
She adds another phone number to the participant list.
