Plural: -or, -ar, -er, -r, -n or no ending

Swedish has several plural endings. Which one a noun takes depends mostly on its gender and its last sound:

• -or: en-words ending in -a drop the -a: flicka → flickor, lampa → lampor
• -ar: many en-words, often one syllable or ending in -e: bil → bilar, pojke → pojkar, cykel → cyklar
• -er: many other en-words and -um words: katt → katter, telefon → telefoner, museum → museer
• -r: some words ending in a vowel just add -r: sko → skor, ko → kor, fiende → fiender
• -n: ett-words ending in a vowel: äpple → äpplen, piano → pianon
• no ending: ett-words ending in a consonant, and en-words in -are: barn → barn, hus → hus, lärare → lärare

Use the plural after numbers, många (many) and två par (two pairs): två par skor (two pairs of shoes).