Supine vs Past Participle

Swedish has two verb forms that English bundles into one, and keeping them apart is one of the genuinely tricky things about Swedish verbs — precisely because your native language gives you no help at all. English has a single form, the past participle: written, closed, drunk. Swedish splits that one job into two distinct forms. The supine is what you put after ha ("have") to build the perfect: har skrivit ("has written"). The past participle is what you use as an adjective or in the passive: en skriven bok ("a written book"). They look similar, they come from the same verb, and English-speaking learners constantly swap them — saying har skriven (wrong) or en skrivit bok (wrong). This page draws the line clearly so you can stop guessing.

The core split: one English form, two Swedish forms

Look at what English does and does not do:

• English: I have *written a book. / a **written book — *same word, written, in both.
• Swedish: Jag har *skrivit en bok. / en **skriven bok — *two different words, skrivit and skriven.

That is the whole problem in one line. Because English uses written for both, your instinct is to find one Swedish word and use it everywhere. But Swedish demands you pick:

• Supine (skrivit) — comes only after ha (har / hade / kommer att ha) to form the perfect and pluperfect. It never changes form: it is the same whether the subject is jag, vi, en bok, or tre böcker.
• Past participle (skriven) — used as an adjective (in front of a noun, or after vara/bli) and in the passive. It agrees in gender and number with its noun, exactly like an ordinary adjective: skriven (common), skrivet (neuter), skrivna (plural/definite).

The supine is fixed; the participle agrees

The supine has exactly one form per verb. It does not care about gender, number, or anything else. Whatever follows ha, the supine is frozen:

The participle, by contrast, behaves like any adjective. It has a common-gender form, a neuter form, and a plural/definite form, and it must match its noun:

Notice that for this verb the neuter participle stängt and the supine stängt happen to look identical. That coincidence is exactly why learners get confused — but they are doing different jobs. In ett stängt fönster, stängt agrees with the neuter noun; in har stängt, stängt is the frozen supine. Same shape, different grammar.

Side by side: a weak verb (måla) and a strong verb (skriva)

The clearest way to see the split is to watch one weak (group 1) verb and one strong verb run through both forms.

måla ("to paint") — a regular group-1 verb. Supine ends in -at; participle in -ad / -at / -ade:

For group-1 verbs the trap is sharp: the supine målat and the neuter participle målat are spelled the same, but the common-gender participle is målad and the plural is målade — neither of which can ever follow ha.

skriva ("to write") — a strong verb. Supine ends in -it; participle in -en / -et / -na:

Here the two forms diverge completely: the supine is skrivit (with -it), while every participle form uses -en / -et / -na. There is no overlap, so this is actually the easiest class to keep straight — skrivit simply cannot describe a noun, and skriven simply cannot follow ha.

Form summary: how to build each one

You do not have to memorize this as a wall of endings — but it helps to see the pattern.

Supine endings:

• Group 1 (måla): -at → målat
• Group 2 (stänga, köpa): -t → stängt, köpt
• Group 3 short verbs (bo, tro): -tt → bott, trott
• Strong verbs (skriva, dricka): -it → skrivit, druckit

Past participle endings (common / neuter / plural):

• Group 1: -ad / -at / -ade → målad / målat / målade
• Group 2: -d / -t / -da or -t / -t / -ta → stängd / stängt / stängda; köpt / köpt / köpta
• Strong: -en / -et / -na → skriven / skrivet / skrivna

Why English gives you no help here

In English, the past participle is the only form for both jobs, and it never inflects. Written is written whether it follows have or describes a book; English nouns don't push gender or number back onto adjectives at all. So when you learn Swedish, you have nothing to transfer — you are building a distinction your native grammar simply does not encode.

The deeper logic is worth holding onto. The supine is fundamentally verbal: it reports an action that the subject completed (I have written). The participle is fundamentally adjectival: it describes the state something is in as a result of an action (a written book = a book that is in the written state). Because the participle is really an adjective, Swedish makes it agree like one. Because the supine is really part of the verb, Swedish freezes it. Once you feel that the supine is "verb-flavored" and the participle is "adjective-flavored," the choice becomes intuitive rather than a coin flip.

Common Mistakes

Key Takeaways

• English uses one form (written) for both jobs; Swedish uses two — and confusing them (har skriven, en skrivit bok) is a signature learner error.
• Supine = the fixed form after ha (har skrivit, har målat, har stängt). It never changes.
• Past participle = the form used as an adjective or in the passive (en skriven bok, ett skrivet brev, skrivna böcker). It agrees in gender and number.
• The decisive test: a form of ha right before? → supine. Describing a noun, or after vara/bli? → agreeing participle.
• Group-1 verbs (måla) hide the trap because the supine målat equals the neuter participle målat — but the common form målad and plural målade can never follow ha. Strong verbs (skrivit vs skriven) keep the two visibly separate.