Stowing away, which refers to secretly hiding on a ship or vehicle in order to travel without paying or being detected, has several antonyms depending on the context. If we are talking about legal and authorized methods of traveling, antonyms for stowing away could be boarding or embarking. Conversely, if we are discussing prohibited and unlawful ways of traveling, antonyms could include disembarking, abandoning, or surrendering oneself to the proper authorities. Overall, stowing away has negative connotations as it involves deception and breaking the law, while its antonyms connect to lawful and transparent ways of transportation.