Passively is an adverb that means to accept or do something without active response or resistance. Some synonyms for passively include inactively, unresponsively, indifferently and submissively. Inactively suggests a lack of energy or willingness to act, while unresponsively means lacking the ability or desire to respond. Indifferently means not showing a preference or interest in something, while submissively suggests a willingness to comply with the wishes or orders of others. Other synonyms for passively might include resignedly, stoically, apathetically and acquiescently, depending on the context in which the term is being used.