Un-advantageous, also known as disadvantageous, refers to something that is unfavorable or not beneficial. There are many synonyms for this word, including unfavorable, unprofitable, inauspicious, detrimental, adverse, harmful, and disadvantageous. These words indicate that a particular situation is likely to result in negative consequences or harm to a person or group. It is important to understand the context of the situation in order to accurately choose the appropriate synonym for un-advantageous. In general, these words all suggest that a particular decision or course of action is not beneficial and should be avoided if possible.