Omega male in social terms is an outsider yet notable for distinction, someone worthy who does not conform to the existing peer hierarchy. It has been said that an Omega is someone of zero worth, as ethologist use Alpha, Beta and Omega in pack descriptions with omega being the lowest position. This has little to do with the socially developed human hierarchy originally used by sorority sisters in the united states to easily label males according to a set of hegemonically established criteria. For example if someone is described as the "Last word" in men, that would hardly be a pejorative description. To use Omega as a negative term is to fail to recognize that losers did not exist in relation to the thought process of the college/university girls who popularized this system, and as such get no mention at all. They only mention people who are socially significant in some positive way as to merit their attention.
Omega is a logical choice, when faced with the problem of describing people who are clearly not subservient to an alpha yet cannot be described as an alpha themselves, There is no set criteria for an Omega, the sole common trait is one of being a rogue social wander who avoids binding attachments generally rejects social hierarchy treating everyone equally based on personal judgment, and refuses to be drawn into tribalistic feuds between groups of people