rudimentary

[roo-duh-men-tuh-ree, -tree] / ˌru dəˈmɛn tə ri, -tri /

ADJECTIVE

basic, fundamental

Synonyms

STRONGEST

elemental elementary embryonic primitive simple

WEAK

abecedarian basal beginning early immature initial introductory larval nuts-and-bolts primary simplest uncompleted undeveloped vestigial

Antonyms

STRONGEST

complex complicated difficult intricate sophisticated

WEAK

additional advanced derivative developed extra nonessential

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The other was being recruited by Arnold Beckman, a Caltech alum, a renowned inventor of scientific instruments, and scientific advisor to L.A.’s rudimentary air pollution control operation.

From Los Angeles Times • Mar. 26, 2026

Anyone with even rudimentary knowledge of recent history would have known this was likely.

From Salon • Mar. 15, 2026

"It's the most rudimentary mine, the cheapest one, and the main threat in the Strait of Hormuz," said the former high-ranking member of the navy.

From Barron's • Mar. 11, 2026

"I just took a very rudimentary, basic kit with me," he says.

From BBC • Jan. 19, 2026

At the moment it is mostly an arrangement of packed soil and stacks of stone forming tall but rudimentary walls.

From "The Night Circus" by Erin Morgenstern

Vocabulary lists containing rudimentary

Essential Academic Vocabulary for High School Students, List 4

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