de sleutel — key
de sleutels
Unstressed endings like -el, -en, -er add -s (tafel → tafels).
Every Dutch plural takes de. Check the singular article →
The plural (meervoud) of sleutel is "de sleutels". Unstressed endings like -el, -en, -er add -s (tafel → tafels).
Like every Dutch plural, de sleutels takes de. Dutch plurals are always de-words, regardless of the singular article.
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