Oppugning refers to questioning, challenging or opposing something or someone. Therefore, antonyms for "most oppugning" would be words that describe acceptance, agreement or approval. These antonyms include terms such as acceptance, agreement, approbation, endorsement, and support. When something or someone is acceptable, it means they have been approved or considered suitable, and are deemed fit for a particular purpose. Agreement implies a harmonious relationship or consensus among parties. Approbation refers to the act of endorsing or praising someone, while endorsement expresses approval or recommendation. Lastly, support denotes backing, encouragement or assistance given to someone. These words have a positive connotation and are often used to describe situations or individuals in a favorable light.