1: Something that is past it's prime or popularity. Out of style.
2: Used when saying someone you formerly dated.

The word has traditionally referred to things that have become unfashionable or outmoded. Later it came to refer to things that were socially unacceptable to the viewing audience perhaps because of the viewers social standards. Within certain geographic areas of vermont and new hampshire it has taken on a new meaning - basically referring to things that generally suck ass.

A phrase men/women say after asking someone on a date and that person agrees to go out with then.

It’s mainly used after the person who asked tells them what they’re doing.

When two people love each other very very much but aren't officially dating because of other responsibilities or a fear of commitment or some other lame excuse.

Dating is where two people who are attracted to each other spend time together to see if they also can stand to be around each other most of the time, if this is successful they develop a relationship, although sometimes a relationship develops anyways if the people can't find anybody else to date them, or are very lonely or one person is only attracted to the other and pretends to be in love with the second unfortunate person who has the misunderstanding that they have found love. This occurs quite often and eventully leads to something called cheating.

the process by which you decide whether you hate the other person or not

when a man/woman goes out with another individual or many different people to configure compatibility. not having any clear commitment. it may be as short as a week or for many years. it is not a relationship