Synonyms for rudimentary

Adjective

1. fundamental, rudimentary, underlying, basic (vs. incidental)

usage: being or involving basic facts or principles; "the fundamental laws of the universe"; "a fundamental incompatibility between them"; "these rudimentary truths"; "underlying principles"

2. rudimentary, incomplete (vs. complete), uncomplete

usage: being in the earliest stages of development; "rudimentary plans"

3. vestigial, rudimentary, undeveloped (vs. developed)

usage: not fully developed in mature animals; "rudimentary wings"