Bitter
Bitter is a very generic term use to describe a wide variety of ales. In general, it refers to a light bodied, basic style of English ale, usually not very potent in terms of alcohol content. Often referred to as Session Beer. Session? I once heard it described this way: "People can sit around and drink it all night, discussing the important matters of the day, without wandering too far off the original subject." Bitters can be lightly or highly hopped.