There are several antonyms for the word "omnitude," which refers to the state or quality of being all-encompassing, comprehensive, or limitless. Some antonyms for "omnitude" include limitation, restriction, narrowness, incompleteness, and insufficiency. These words suggest a sense of constraint, incompleteness or inadequacy, as opposed to the expansive and all-encompassing nature of "omnitude." Other antonyms for "omnitude" might include words like specificity or selectivity, which suggest a focus on a narrow set of things or ideas, as opposed to a comprehensive or all-encompassing approach. Regardless of the antonym, using a word that is the opposite of "omnitude" can evoke a sense of limitation, constraint, or inadequacy.