The word "more boresome" indicates something that is increasingly tedious or uninteresting. However, some antonyms that convey the opposite connotation of "more boresome" include stimulating, exciting, captivating, engaging, and fascinating. These words indicate something that is intriguing, engrossing, and thought-provoking. For instance, a riveting movie or a gripping novel can be considered antonyms to something that is more boresome. Similarly, a lively conversation, an adventurous outing, or a thrilling sports event can be an antonym to something that is monotonous or dull. As such, choosing the right words is crucial to convey the intended meaning and context.