The suffix results from an old plural in -er (cognate to German -er), to which a second plural ending -en was added. The single version can still be seen in certain compounds such as kinderkamer and in the formation of plural diminutives kindertjes, radertjes. The suffix -eren is cognate to English -ren in children.
- forms the plural of a small group of nouns, like lam, gelid, been, kalf, rund, blad, rad
- kind — kinderen
- part of the infinitive of verbs borrowed mainly from French verbs which end on -er, e.g. informeren from French informer (to inform)