Antonyms are words that have opposite meanings to a particular word. However, "Mark Lloyd" is not a word in itself, but a proper name. Therefore, it's not possible to provide antonyms for it.
However, we can explore some antonyms for words associated with "Mark" and "Lloyd." For "Mark," some antonyms include erase, remove, and delete. For "Lloyd," some antonyms include prevent, block, and hinder.
In conclusion, while we cannot provide antonyms for the name "Mark Lloyd," we can identify antonyms for words associated with the name. Antonyms can be useful when trying to understand the meaning of words or to create a more concise and descriptive sentence.