Select the word that is different from the others in terms of meaning.

The word "ample" is distinct from the others because it conveys a sense of being more than just enough, but it also carries connotations of spaciousness or sufficiency in physical terms. While "abundant," "sufficient," and "plentiful" all emphasize a condition of having a large quantity or more than needed, "ample" suggests not just quantity but also a quality of being comfortably adequate or spacious. This subtle difference in meaning highlights why "ample" stands out as the different choice.