de zekerheid
de-wordsecurity
/də ˈzeːkərɦɛi̯t/
de zekerheden
Words ending in -heid or -teit are de.
Ik zoek meer zekerheid in mijn werk.
I am looking for more security in my job.
The de/het checker covers one word. The full platform covers vocabulary, grammar and all five DUO sections.