rudimentary

Adjective
US[roo-duh-men-ter-ee]/ˌrudəˈmɛntɚi/5 syllables
Synonyms: fundamentalunderlyingvestigial

Open English WordNet

Adjective (3)

  1. being or involving basic facts or principles“the fundamental laws of the universe”“a fundamental incompatibility between them”“these rudimentary truths”“underlying principles”Synonyms: fundamentalunderlyingOpposite incidentSimilar basic
  2. being in the earliest stages of development“rudimentary plans”Opposite completeSimilar incomplete, uncomplete
  3. not fully developed in mature animals“rudimentary wings”Synonyms: vestigialOpposite developedSimilar undeveloped

Related words rudiment noun

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incessantadjective

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Webster's Dictionary (1913)

Ru′di·men′ta·ry adjective

Origin: Cf. F. rudimentaire.

1. Of or pertaining to rudiments; consisting in first principles; elementary; initial; as, rudimental essays.

2. Biology Very imperfectly developed; in an early stage of development; embryonic.

Webster’s Revised Unabridged Dictionary (1913), from GCIDE 0.54

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