rudiment
a basic beginning or undeveloped part
Root
- rud: rough, raw, or untrained
Other words with the rud root
- erudite: learned or scholarly
- erudition: deep learning or scholarship
- rude: rough, crude, or unrefined
- rudimentary: basic or undeveloped
A rudiment is a rough beginning: the early, unfinished piece.
The course starts with the rudiments of logic.