Most aiding is a term used to describe something that provides the most help or support. The opposite of most aiding would be something that is hindering, obstructing, or impeding progress. Other antonyms for most aiding could include terms like unhelpful, unsupportive, obstructive, or even harmful. It is important to recognize that not all actions or situations are going to be most aiding or most hindering, as some may fall somewhere in between. By understanding these antonyms for most aiding, we can better understand the impact of various actions and choose the ones that will be the most beneficial.