Strong's Concordance

Original word: δύσκολος
Transliteration: duskolos
Definition (short): difficult
Definition (full): a sinking, setting

Strong's Exhaustive Concordance

From dus- and kolon (food); properly, fastidious about eating (peevish), i.e. (genitive case) impracticable -- hard.

see GREEK dus-

KJV: And the disciples were astonished at his words. But Jesus answereth again, and saith unto them, Children, how hard is it for them that trust in riches to enter into the kingdom of God!
NASB: The disciples were amazed at His words. But Jesus answered again and said to them, "Children, how hard it is to enter the kingdom of God!