This document discusses the different uses of the word "just" in English. It can be used as an adverb to express recent actions with the present perfect, such as "I have just eaten." It can also be used as an adverb with words like "now" or "at the moment." Finally, it can be used as an adjective to say something is morally right or supported by a good cause, as in "I'd like to live in a just society."