The phrase "caught likeness" suggests a depiction or representation of someone or something that has been captured or done well. Antonyms for this phrase might include "poor resemblance," "botched portrayal," "unconvincing image," or "inaccurate rendering." Other antonyms could refer to the opposite of being captured or recorded, such as "unobserved" or "unnoticed," or to the opposite of being done well, such as "amateurish," "sloppy," or "careless." Depending on the context you are using the phrase in, there may be other antonyms that can help to convey the precise meaning you are looking for.