The term "man-size" refers to something large or substantial, often associated with masculinity. The antonyms for this word would be "small," "petite," or "dainty," indicating a smaller size or more delicate nature. Other antonyms could include "feminine," "fragile," or "weak," suggesting a lack of strength or toughness. Alternatively, one could use the terms "moderate," "average," or "ordinary" to describe something that is not particularly large or impressive. In short, there are many words that can be used as antonyms for "man-size," depending on the context and desired connotations.