The phrase "am no end to" implies an indefinite or infinite quantity or quality, making it challenging to find direct antonyms. However, one could consider using words like limited, finite, restricted, or bound. These words reflect a sense of constraint or restriction, unlike the open-ended nature of "am no end to." Another potential option could be "conclusive," which suggests that whatever is being referred to has a definite and clear endpoint. Alternatively, one could opt for phrases like "finite quantity" or "limited scope," which capture the idea of a specific, defined limitation in contrast to the boundless possibilities implied by "am no end to.