The phrase "hadst respect to" is not a standalone word, but a phrase that can be defined as having regard, consideration, or reverence towards something or someone. However, some possible antonyms for this phrase may include disregard, disrespect, dishonor, ignore or neglect. These words imply a lack of concern, appreciation, or attention towards someone or something. For instance, if someone is said to have disregarded or disrespected another person, it could mean that they have not shown the necessary regard, reverence or honor towards that person's feelings, opinions, or abilities. In other words, the antonyms of "hadst respect to" suggest a lack of acknowledgement for something or someone.