adjective

rudimentary

rudimentary, basic, elementary

He has only a rudimentary knowledge of the subject.

He has only a rudimentary knowledge of the subject.

The shelter was rudimentary, but it kept them dry.

The shelter was rudimentary, but it kept them dry.

((rudimentary)) ((noun)) involving or limited to basic principles He has a rudimentary grasp of physics.

Synonyms: basic, elementary, simple, primitive; Antonyms: advanced, complex, sophisticated

From Latin 'rudimentum' meaning 'a first attempt, beginning', from 'rudis' (raw, uncultivated).

Connect it to 'rude' in its old sense of 'raw' or 'unrefined'. Something rudimentary is in its most basic, raw form.

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