

Slightly different thing cause this is agglutination but:
Ill/illik: fit/fits
Illet: concerns someone
Illeték: duty(kinda)
Illetéktelen: one without the duty, in english unauthorized(look at “staff only” for why “duty” makes sense)
Illetéktelenek: multiple unauthorized ones
Illetékteleneknek: for the multiple unauthorized ones
Then you can a use it in a sentence “Illetékteleneknek belépni tilos”, “Forbidden for unauthorized ones to enter”

Ahh yeah i kinda forgot to write that. Its hungarian tho this is kind of an extreme case. Most words youd use in a normal sentence has 1 to 3 suffixes.