To complete something by adding the missing parts or bringing a collection to completion.
example
Mit dieser seltenen Münze konnte er endlich seine Sammlung komplettieren.
With this rare coin, he was finally able to complete his collection.
Usage tips
Word family
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.
EXAMPLE
Mit dem neuen Stürmer konnte die Mannschaft endlich komplettiert werden.
With the new striker, the team could finally be completed.
Sentence structure
'Komplettieren' (to complete) is a transitive verb and always requires an accusative object. You always complete 'etwas' (something).
EXAMPLE
Ich brauche nur noch ein Puzzleteil, um das Bild zu komplettieren.
I only need one more puzzle piece to complete the picture.
Typical collocations
This verb is often used in contexts involving collections, groups, or sets. Typical objects are: a collection, a team, a set, or a series.
EXAMPLE
Mit diesem Band komplettiert er seine Buchreihe.
With this volume, he completes his book series.
Register
'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).
EXAMPLE
Der Bericht wird durch die neuesten Zahlen komplettiert.
The report is completed by the latest figures.
Compare with
near_synonym · confusable
komplettieren vs abschließen
to lock / to complete
'abschließen' and 'komplettieren' can both be used at the end of a task or collection. 'abschließen' means that you bring an activity, project, or course of education to an end. 'komplettieren' means that you add missing parts until something is complete. The words can be confusing because something often has to be complete before it can be finished. The important difference is: 'komplettieren' focuses on the missing parts, while 'abschließen' focuses on the end of the whole thing.
komplettieren
Die Klasse hat die Wortliste mit zehn neuen Beispielen komplettiert.
The class completed the vocabulary list with ten new examples.
abschließen
Der Kunde schließt die Renovierung seiner Wohnung diese Woche ab.
The customer is completing the renovation of his apartment this week.