Although the list of irregular verbs is rather long, the good news is that by far most Dutch irregular verbs have a perfectly regular present tense. Therefore, we will refer to them as partly irregular verbs or [strong verbs](#/lesson/Verbs.Ir02), as opposed to the 11 [completely irregular verbs](#/lesson/Verbs.Ir05).
Partly irregular verbs (strong verbs)
If you look at the [list of irregular verbs](#/lesson/Verbs.Ir03), you can discern a few patterns, which enables you to learn many verbs by memorizing only a few general patterns.
Completely irregular verbs
Each completely irregular verb will be discussed on a separate page. Here, the conjugation of the present, past and perfect of the verb will be outlined.
Willen
_Willen_ (to want) is a perfectly regular verb, with one tiny little extravagancy:
In the third person singular of the present tense, we do not add -t to the stem.
As you read on the page about the regular [present tense](#/lesson/Verbs.Re07) conjugation, the third person singular is "stem + t".
But instead of _hij wil t_ (stem + t), we write _hij wil_.
This is such a tiny irregularity, that _willen_ is really regarded as a regular verb. However, it has to be mentioned, so why not mention it here.