The word "designer" typically refers to someone who creates or plans a particular project or product. In terms of antonyms, we can look at words that represent the opposite of designing or planning. Some antonyms for "designer" could include terms like amateur, novice, or unskilled. These words suggest a lack of experience or expertise in creating something specific. Additionally, other antonyms for "designer" might include terms like destroyer, or demolisher, which suggest a focus on destruction rather than creation. Ultimately, antonyms for the word "designer" can vary depending on the specific context and intended meaning.