adjective
1.
of, relating to, or dealing with the simplest principles of something
can't handle the most elementary decision-making
Synonyms: basal, beginning, elemental, rudimental, rudimentary, simplest
Related Word: introductory, prefatory, preliminary; easy, simple; rude, unsubtle
Contrasted words: complex, complicated, elaborate, intricate, labyrinthine; sophisticated
Antonyms: advanced
2.
Synonyms: elemental 1, basic, essential, fundamental, primitive, substratal, underlying