To make less burdensome or afflictive; to alleviate; as, to lighten the cares of life or the burden of grief.
To deprive of credit or good repute; to bring reproach upon; to make less reputable; to disgrace.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "make less" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.