Significatively is an adverb that refers to something done in a significant or meaningful manner. Some synonyms for the word significatively include importantly, markedly, substantially, noticeably, prominently, considerably, and significantly. These words all convey the idea of something being done in a manner that is significant or meaningful. Depending on the context, other synonyms for significatively could include significantly, substantially, strongly, or decidedly. It is important to choose the appropriate synonym for the context in which it will be used, as each word can have slightly different connotations or implications. Overall, synonyms for significatively can help to add variety and nuance to one's writing or speaking.