Etymology
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rudimentary (adj.)

1819, "undeveloped, elementary;" 1821 as "pertaining to first principles;" see rudiment + -ary. Earlier was rudimental (1590s) "pertaining to or of the nature of rudiments."

updated on October 19, 2021

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Definitions of rudimentary from WordNet

rudimentary (adj.)
being or involving basic facts or principles;
these rudimentary truths
Synonyms: fundamental / underlying
rudimentary (adj.)
being in the earliest stages of development;
rudimentary plans
rudimentary (adj.)
not fully developed in mature animals;
rudimentary wings
Synonyms: vestigial
Etymologies are not definitions. From wordnet.princeton.edu, not affiliated with etymonline.

Dictionary entries near rudimentary

rude

rudely

rudeness

rudesby

rudiment

rudimentary

Rudolph

Rudra

rue

rueful

ruefully