het geheim — secret
de geheimen
Most Dutch nouns add -en (with a spelling tweak).
Every Dutch plural takes de. Check the singular article →
The plural (meervoud) of geheim is "de geheimen". Most Dutch nouns add -en (with a spelling tweak).
Like every Dutch plural, de geheimen takes de. Dutch plurals are always de-words, regardless of the singular article.
The platform drills vocabulary and grammar in real A2 exam tasks, AI-graded, across all five DUO sections.