abecedarian - [ay-bee-see-DAIR-ee-uhn] - noun
1. One who is learning the alphabet; hence, a beginner.
2. One engaged in teaching the alphabet.
3. Pertaining to the letters of the alphabet.
4. Arranged alphabetically.
5. Rudimentary; elementary.
The boy might think he's good at basketball, but his skills are too abecedarian to make the team.