The English term "abysmal, inconceivable, unintelligible" matches the Dutch term "ondoorgrondelijk"

other english words that include "abysmal" : dutch :
abysmal onpeilbaar
other english words that include "inconceivable" : dutch :
inconceivable, unintelligible onbegrijpelijk
other english words that include "unintelligible" : dutch :
inconceivable, unintelligible onbegrijpelijk