Of the five Swedish plural declensions, this one is the gift. Class 1 — the -or plural — is the most predictable class in the whole noun system: it applies to en-words ending in unstressed -a, and that single visible cue forecasts the -or plural with very few exceptions. Because the trigger is so reliable, this is the class to learn first, as a confidence-builder before you wade into the murkier -ar / -er distinction. This page gives the rule, the full four-form paradigm, and the high-frequency vocabulary it covers.
The rule: drop -a, add -or
The mechanics are simple and consistent. Take an en-word ending in unstressed -a, remove the final -a, and add -or:
en flicka → flickor · en gata → gator · en kvinna → kvinnor
The dropped -a is the only moving part. You are not adding -or to the whole word (that would give the wrong flickaor) — you swap the final -a for -or. Almost every noun in this class is common gender (an en-word); class 1 is essentially the home of the -a nouns, which are themselves overwhelmingly en-words, so the gender and the plural reinforce each other.
Tre flickor och deras mammor väntade vid grinden.
Three girls and their mothers waited at the gate. flicka → flickor, mamma → mammor — drop -a, add -or.
Det växer rosor och andra blommor i trädgården.
Roses and other flowers grow in the garden. ros → rosor, blomma → blommor.
The full paradigm: all four forms
A class 1 noun runs through the four forms predictably. The definite singular adds -n (the noun already ends in a vowel), the indefinite plural is -or, and the definite plural adds -na to give -orna:
| Indefinite singular | Definite singular | Indefinite plural | Definite plural |
|---|---|---|---|
| en flicka | flickan | flickor | flickorna |
| en gata | gatan | gator | gatorna |
| en kvinna | kvinnan | kvinnor | kvinnorna |
| en blomma | blomman | blommor | blommorna |
Read across one row and you have the whole life of the word. Note the rhythm: singular keeps the -a (flicka, flickan), plural replaces it with -or (flickor, flickorna). Once the -a is gone in the plural it never comes back.
Flickorna sprang över gatorna mot parken.
The girls ran across the streets toward the park. Definite plurals: flickorna, gatorna — indefinite -or plus -na.
Kvinnorna i kören sjöng en gammal visa.
The women in the choir sang an old song. kvinna → kvinnor → kvinnorna.
High-frequency -or nouns
Because the -a ending is so common, class 1 holds a large slice of everyday vocabulary. Here are eight high-frequency members across all four forms — worth memorising as a block, since they share one pattern:
| Indef. sing. | Def. sing. | Indef. plural | Def. plural | Meaning |
|---|---|---|---|---|
| en flicka | flickan | flickor | flickorna | girl |
| en gata | gatan | gator | gatorna | street |
| en kvinna | kvinnan | kvinnor | kvinnorna | woman |
| en blomma | blomman | blommor | blommorna | flower |
| en mamma | mamman | mammor | mammorna | mum |
| en klocka | klockan | klockor | klockorna | clock / bell |
| en stjärna | stjärnan | stjärnor | stjärnorna | star |
| en lampa | lampan | lampor | lamporna | lamp |
Klockorna i kyrkan ringer varje söndag.
The bells in the church ring every Sunday. klocka → klockor → klockorna.
På himlen syntes tusentals stjärnor.
Thousands of stars were visible in the sky. stjärna → stjärnor — note the ä stays put through the plural.
The handful that don't end in -a
The class is almost entirely -a nouns, but a small group of en-words ending in a consonant also take -or. The everyday one to know is en ros → rosor ("rose"). A couple of others belong here for historical reasons, but they are rare enough that ros is really the only one you need to recognise. (Watch out for one trap: en våg meaning "wave" goes vågor and sits in class 1, but the identically spelled en våg meaning "scales / balance" goes vågar in class 2 — same spelling, two plurals, two meanings.) For these consonant-final members you simply add -or to the whole word — there is no -a to drop:
en ros → rosor (definite plural rosorna)
Han gav henne tolv röda rosor.
He gave her twelve red roses. ros → rosor — a consonant-final class 1 noun; no -a to drop, just add -or.
Rosorna i vasen har redan vissnat.
The roses in the vase have already wilted. Definite plural rosorna.
Orthography: dropping the -a, keeping å/ä/ö
Two spelling points. First, the -a you drop is always the final unstressed -a of the dictionary form — and only that letter goes; the rest of the stem is untouched. Second, any å, ä, ö inside the stem stays exactly as it is through the plural, because those are distinct letters, not modifiable a/o. So en stjärna → stjärnor keeps its ä, and en tärna → tärnor ("tern / maid") keeps its ä. There is no umlaut in this class — the vowel of the stem never changes.
Det flög några tärnor över viken.
A few terns flew over the bay. tärna → tärnor — the ä is part of the stem and stays unchanged.
Common Mistakes
❌ en flicka → flickaor
Incorrect — you must drop the final -a before adding -or, not keep it.
✅ en flicka → flickor
a girl → girls — drop -a, add -or.
❌ tre flickas / fem gatas
Incorrect — Swedish has no -s plural; class 1 takes -or.
✅ tre flickor / fem gator
three girls / five streets.
❌ en blomma → blommer (treating it as class 3)
Incorrect — an -a en-word is class 1: blomma → blommor, not blommer.
✅ en blomma → blommor
a flower → flowers.
❌ flickor (definite plural) for 'the girls'
Incorrect — that's the indefinite plural. The definite plural adds -na: flickorna.
✅ flickorna
the girls — indefinite -or plus the definite -na.
Key Takeaways
- Class 1 is the -or plural: en-words ending in unstressed -a drop the -a and add -or (flicka → flickor).
- It is the most predictable of the five classes — the -a ending almost guarantees -or — so learn it first.
- Full paradigm: en flicka / flickan / flickor / flickorna — the definite plural is -orna.
- A small set of consonant-final en-words also take -or; the everyday one is ros → rosor.
- No umlaut here: any å/ä/ö in the stem stays unchanged (stjärna → stjärnor).
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Start learning Swedish→Related Topics
- The Five Plural DeclensionsA2 — Swedish builds plurals through five declension classes — -or, -ar, -er, -n, and a zero ending — not the English -s. This overview names all five, gives a model noun for each, and lays out the prediction rules competitors omit: gender plus the word's final sound forecasts the class about 80% of the time, so the system is far less random than it first looks.
- The Definite PluralA2 — How Swedish says 'the cars / the girls / the houses': you take the indefinite plural and add a second definite suffix — -orna (flickorna), -arna (bilarna), -erna (sakerna), -na (äpplena), and -en for the zero-plural ett-words (husen). The rule of thumb: add -na to vowel-ending plurals, -en to consonant-ending zero plurals. Plus the dangerous look-alike: husen ('the houses') vs the -en that elsewhere marks the definite SINGULAR.
- Plural Class 2: -arA2 — The second and largest Swedish plural declension: en-words that add -ar (en bil → bilar, en dag → dagar), including -e nouns that drop the -e first (en pojke → pojkar) and -ing/-dom nouns. Definite plural -arna (bilarna). Because so many everyday concrete nouns live here, this class delivers the most usable vocabulary fastest.