Uninterestedly is an adverb used to describe an action or behavior that is done without much enthusiasm or engagement. Some synonyms for uninterestedly include disinterestedly, apathetically, lethargically, indifferently, aloofly, nonchalantly, coolly, passively, impassively, and distantly. These words all convey a lack of interest or concern for something, but they may differ slightly in their connotations. For example, disinterestedly implies that the person is unbiased and impartial, while apathetically implies a lack of emotion or motivation. Choosing the right synonym to use in context can help convey the intended meaning and tone of the sentence.