No problem.
A good movie has strong plot and character development (one of these MUST be the driving force for the rest).
It is internally consistent and abides by a set of rules. (Doesn't matter what those rules are, so long as they are consistent)
There should be some guiding principle (be it to illicit laughter, a cry for help, exposing something, forcing people to face and address an issue, what have you).
Good music helps
Looking pretty with awesome special effects comes in last. That's right, FX are great, but they come in LAST in priority. "Special Effects are a way to help you tell the story. If you have a movie that's all effects and no story, you would have a pretty boring movie" --rough paraphrase of George Lucas 1978 (oh, the irony)
There you go.
Good movie defined.
Thank Aristotle.