rudimentary
UK: ˌruːdɪˈmentri | US: ˌruːdɪˈmentri
adj. relating to basic or undeveloped principles; elementary
adj. imperfectly developed; crude or primitive
The word "rudimentary" traces back to the Latin rudis ("rough, unformed") + -mentum (noun-forming suffix indicating result or means) + -ary (adjective suffix). Originally used in biology to describe undeveloped organs (18th century), it later generalized to mean "basic" or "primitive." The morpheme rud- survives in related words like rude (lacking refinement) and erudite (literally "smoothed out from roughness," hence "learned").
The tribe had only rudimentary tools made of stone and bone.
Her knowledge of physics is still rudimentary after the introductory course.
The app provides rudimentary translations but often misses nuances.
Early computers had rudimentary graphics capabilities compared to modern devices.
The scientist observed rudimentary wings on the flightless bird species.