What is thus far?

Thus far, without specific context, the phrase "thus far" simply means "up to this point" or "until now." It's used to indicate a summary or overview of something that has happened or been accomplished until the present moment. It often introduces a statement that will be followed by further developments. You might see "thus far" used when discussing the progress of a project, the plot of a story, or the findings of a research study. It suggests that the situation is subject to change.