The word "lotsa" is an informal term used to indicate a large amount or quantity of something. When looking for antonyms for "lotsa," we must consider words that convey the opposite meaning. Some antonyms that fit this description include "few," "scant," "sparse," and "meager." "Few" refers to a small number, while "scant" and "sparse" represent a lack of abundance. "Meager" indicates a small or inadequate amount. Therefore, when referring to an insufficient quantity of something, we can use these antonyms instead of "lotsa." It is essential to keep in mind the context of the sentence while selecting an appropriate antonym.