Agent and instrument nouns (-er, -aar, -der)

Turning Verbs into Nouns

In Dutch, you can turn a verb into a noun to describe who performs an action (the agent) or what tool is used (the instrument). You do this by adding a suffix to the verb stem.

The Default Suffix: -er

For most verbs, simply add -er to the verb stem.

From ontwerpen (to design), we get de ontwerper (the designer):

The designer of this house was very famous.
De ontwerper van dit huis was heel beroemd.

Stems Ending in -el or -er: -aar

If a verb's stem ends in an unstressed -el or -er (from verbs ending in -elen or -eren), the suffix becomes -aar.

From bewonderen (to admire), the stem is bewonder, giving us de bewonderaar (the admirer):

That designer has many admirers.
Die ontwerper heeft veel bewonderaars.

Stems Ending in -r: -der

If the verb stem ends in an -r, Dutch adds -der for easier pronunciation.

Huren (to rent) has the stem huur, giving us de huurder (the tenant). Likewise, verhuren (to rent out) gives us de verhuurder (the landlord).

The tenant pays the rent to the landlord every month.
De huurder betaalt elke maand de huur aan de verhuurder.

Instruments: Household Gadgets and Appliances

These same suffixes are used to name household tools and appliances (instruments) based on their function.

With the default -er suffix:

  • vriezen (to freeze) becomes de vriezer (the freezer).
  • drogen (to dry) becomes de droger (the dryer).
  • koken (to boil) becomes de waterkoker (the kettle).
Is the meat in the freezer?
Ligt het vlees in de vriezer?
My sweater is clean, but it is still in the dryer.
Mijn trui is schoon, maar hij zit nog in de droger.
Will you turn the kettle on for a moment?
Zet jij de waterkoker even aan?

With the -aar suffix (since schakelen ends in -el), we get de schakelaar (the switch):

Where is the switch for that big lamp?
Waar zit de schakelaar van die grote lamp?

And with the -er suffix again, aansteken (to light) becomes de aansteker (the lighter):

Do you have a lighter for the barbecue?
Heb je een aansteker voor de barbecue?

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