Omnisciently is an adverb that denotes having complete knowledge or insight about all things. Some synonyms for omnisciently include all-knowingly, wisely, sagaciously, and smartly. These synonyms emphasize the idea of possessing extensive knowledge and expertise, indicating a deep understanding of a particular situation or subject matter. Other synonyms for omnisciently are astutely, perceptively, acutely and shrewdly, which convey sharpness, quickness, and acumen. These words are often used in contexts that require a high level of intelligence and perception. In summary, there are many synonyms for omnisciently that describe qualities such as deep wisdom, finesse, cognitive prowess, and intellectual agility.