“contemned” in the Douay-Rheims Bible

The word contemned appears 4 times in the Douay-Rheims Bible. The first 4 matching verses are shown below.

Exodus 23:21 Take notice of him, and hear his voice, and do not think him one to be contemned: for he will not forgive when thou hast sinned, and my name is in him.
Numbers 15:31 For he hath contemned the word of the Lord, and made void his precept: therefore shall he be destroyed, and shall bear his iniquity.
2 Paralipomenon 28:19 For the Lord had humbled Juda because of Achaz the king of Juda, for he had stripped it of help, and had contemned the Lord.
Ezechiel 20:27 Wherefore speak to the house of Israel, O son of man, and say to them: Thus saith the Lord God: Moreover in this also your fathers blasphemed me, when they had despised and contemned me;