The Infinitive and the Stem

Almost everything you do with a Dutch verb starts from its stem. The present-tense "I" form is the stem; the other present endings add to it; the simple past builds on it; the imperative is just the stem alone. So before any conjugation makes sense, you need to derive the stem reliably — and here is the catch that the textbooks underplay: the stem is not simply "the infinitive minus -en." It is "minus -en, then re-spelled" to obey two Dutch spelling rules. This is the exact moment where the open/closed-syllable rule and final devoicing first reach into verb grammar, and getting the re-spelling wrong (mak instead of maak, lev instead of leef) is the first real spelling trap learners hit with verbs.

The infinitive: the dictionary form

The infinitive is the form you look up — "to work," "to walk," "to make." In Dutch it almost always ends in -en:

(A small set of infinitives end in just -n after a vowel — gaan, staan, zien, doen — but the overwhelming majority end in -en, so treat -en as the default.) This -en ending is unlike English, where the infinitive is the bare verb plus an optional "to" (to work). In Dutch the -en is the infinitive marker, and stripping it is step one toward the stem.

Step one: drop the -en

Cut the -en off and you have the raw consonant-or-vowel skeleton:

• werken → werk
• lopen → lop-
• maken → mak-
• pakken → pakk-
• leven → lev-
• reizen → reiz-

For werken you're already done: werk is a legal Dutch spelling. But look at the others — lop, mak, pakk, lev, reiz are all mis-spelled. None of them is how Dutch writes that sound at the end of a word. That's because dropping -en changes the syllable structure and exposes the final consonant, and Dutch spelling responds to both. Step two fixes them.

Step two, part A: re-spell for the open/closed-syllable rule

When the -en was attached, many of these verbs had an open first syllable: ma-ken, lo-pen. The vowel sat at the end of an open syllable, so it was written with a single letter even though it's a long vowel. Strip the -en, and that syllable slams shut: mak, lop now end in a consonant. A long vowel in a closed syllable must be written double. So the stem restores the doubled vowel:

The mirror case is a short vowel. Pakken has a short a, kept short by the double kk before -en (pak-ken). Drop -en and the syllable is already closed by a single consonant, so you don't need the second k — one consonant is enough to close a syllable. The stem sheds the doubled consonant:

So the same rule cuts both ways: long vowels double when their syllable closes (maak, loop), and doubled consonants simplify to one (pak). This is exactly the open/closed-syllable machinery you met with noun plurals — maan/manen, man/mannen — now driving verb stems. See spelling/open-closed-syllables for the full rule.

Step two, part B: re-spell for final devoicing

The second adjustment hits verbs ending in v or z before the -en. Dutch does not allow the letters v or z at the end of a word — the sounds devoice to f and s, and the spelling follows. When you strip -en, the v or z lands at the word's end and must be re-spelled:

Note that leven → leef applies both rules at once: the v devoices to f, and the long ee doubles because the syllable has closed (the infinitive le-ven had an open syllable with a single e). Two spelling adjustments stacked on one stem. Reizen → reis applies just the devoicing (ei is a fixed digraph and doesn't double). See spelling/final-devoicing-spelling for why v→f and z→s happen at word ends.

Putting it together: the full table

Here is the whole derivation for the six model verbs, both steps applied:

Once you have the stem, the "I" form of the present tense is exactly the stem, with no ending added: ik werk, ik maak, ik pak, ik loop, ik leef, ik reis. That's why the stem matters so much — it's not an abstract base, it's a word you say constantly. The endings for the other persons (-t, -en) build on it; see verbs/present/regular for those.

That last example shows the other place the stem appears raw: the imperative is just the stem on its own (Loop!, Werk!, Maak!). So deriving the stem correctly pays off three times over — present "I" form, imperative, and the base for the weak past tense.

Common Mistakes

Every error below is a re-spelling that wasn't done. English speakers, used to verbs that don't change spelling when endings come and go, drop the -en and stop — leaving an illegal Dutch form.

Key Takeaways

• The stem = infinitive minus -en, then re-spelled. It is the "ik" form, the imperative, and the base of the weak past.
• Open/closed-syllable rule: a long vowel doubles when the syllable closes (maken → maak, lopen → loop); a short vowel's doubled consonant simplifies to one (pakken → pak).
• Final devoicing: a final v → f and z → s (leven → leef, reizen → reis). Leven applies both rules at once.
• Werken → werk needs no change because it's already a legal closed syllable — but that's the exception; most stems need re-spelling.
• The error to drill out is stopping after "drop -en": mak, lev, reiz, pakk are all wrong. Always re-spell.