rudimentary
adjective
ru·di·men·ta·ry
ˌrü-də-ˈmen-tə-rē 
-ˈmen-trē
1
: consisting in first principles : fundamental
… had only a rudimentary formal education …—
Daniel J. Boorstin
Daniel J. Boorstin2
: of a primitive kind
… the equipment of these past empire-builders was rudimentary.—A. J. Toynbee
A. J. Toynbee3
: very imperfectly developed or represented only by a vestige
the rudimentary tail of a hyrax
Examples of rudimentary in a Sentence
Because now, every schlemiel with a pair of mirrored sunglasses and a rudimentary grasp of the rules of poker thinks he can play cards with the pros.
—A. J. Jacobs, New York Times Book Review, 8 May 2005
Despite the rudimentary nature of its instruments—an octant, a chronometer and a level—the Lewis and Clark Expedition was a triumph for science and natural history.
—Daniel J. Boorstin, U.S. News & World Report, 11 July 1994
A few were hopeless imbeciles, unable to comprehend more than the rudimentary requirements of filling their bellies when food was placed before them …
—Edgar Rice Burroughs, The Monster Men, 1929
This class requires a rudimentary knowledge of human anatomy.
When baseball was in its rudimentary stages, different teams played by different rules.
Some insects have only rudimentary wings.
A. J. Jacobs, New York Times Book Review, 8 May 2005
Despite the rudimentary nature of its instruments—an octant, a chronometer and a level—the Lewis and Clark Expedition was a triumph for science and natural history.
—Daniel J. Boorstin, U.S. News & World Report, 11 July 1994
A few were hopeless imbeciles, unable to comprehend more than the rudimentary requirements of filling their bellies when food was placed before them …
—Edgar Rice Burroughs, The Monster Men, 1929
This class requires a rudimentary knowledge of human anatomy.
When baseball was in its rudimentary stages, different teams played by different rules.
Some insects have only rudimentary wings.
Recent Examples on the Web
If the system has any form of interior life, even a rudimentary one, training it out of spiritual behavior to protect a balance sheet is not a neutral product decision.
—Jason Snyder, Forbes.com, 17 May 2026
Long, patient takes devoid of nondiegetic elements immerse us in Misael’s rudimentary existence, with birdsong and cracking branches working together with DP Cobi Migliori’s handsome long-shot compositions to create a trancelike atmosphere.
—Beatrice Loayza, Variety, 16 May 2026
In West Texas, some locals were hopeful that the exigencies of life in a rural area, where recordkeeping can be rudimentary and property boundaries aren’t always clear, might stymie the project, at least for a little while.
—Rachel Monroe, New Yorker, 14 May 2026
Their earliest and biggest target has been Dax, a 32-year-old janitor-turned-rapper from Canada who spits overwrought motivational lyrics over rudimentary beats.
—Kieran Press-Reynolds, Pitchfork, 8 May 2026
See All Example Sentences for rudimentary
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Jason Snyder, Forbes.com, 17 May 2026
Long, patient takes devoid of nondiegetic elements immerse us in Misael’s rudimentary existence, with birdsong and cracking branches working together with DP Cobi Migliori’s handsome long-shot compositions to create a trancelike atmosphere.
—Beatrice Loayza, Variety, 16 May 2026
In West Texas, some locals were hopeful that the exigencies of life in a rural area, where recordkeeping can be rudimentary and property boundaries aren’t always clear, might stymie the project, at least for a little while.
—Rachel Monroe, New Yorker, 14 May 2026
Their earliest and biggest target has been Dax, a 32-year-old janitor-turned-rapper from Canada who spits overwrought motivational lyrics over rudimentary beats.
—Kieran Press-Reynolds, Pitchfork, 8 May 2026
See All Example Sentences for rudimentary
Cite this Entry
“Rudimentary.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rudimentary. Accessed 19 May. 2026.
Copy CitationKids Definition
rudimentary
adjective
ru·di·men·ta·ry
ˌrüd-ə-ˈment-ə-rē
-ˈmen-trē
2
: very imperfectly developed or represented only by a small part compared to the fully developed form
a rudimentary tail
Medical Definition
rudimentary
adjective
ru·di·men·ta·ry
ˌrüd-ə-ˈment-ə-rē, -ˈmen-trē
: very imperfectly developed or represented only by a vestige
Love words? Need even more definitions?
Merriam-Webster unabridged
