Tautologically is an adverb that indicates that something has been said in a way that is redundant and circular, meaning that it is repeating itself needlessly. Some synonyms for tautologically include reiteratively, repetitiously, redundantly, circularly, and needlessly. Additionally, using phrases such as "saying the same thing twice" or "repeating oneself" can also convey the same concept. It is important to remember that tautological language can be confusing and frustrating for readers or listeners, and should be avoided in order to communicate ideas clearly and effectively.