1. Marked by great knowledge
2. Learned or scholarly
3. Having or showing profound knowledge
If you’ve seen big bang theory, then relate erudite with Dr. Sheldon Cooper, who is characterized by great knowledge, but is pretty rude (e-‘rud’-ite).
Looking at the last part of erudite i.e. ‘dite’, one can relate it to ‘deity’. Our deities are understood to be ones with profound knowledge and be learned.