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

As it struck the ground, Istanbul Yurdum Spor's captain raced over and started performing rudimentary CPR, pumping its ribcage, according to footage sent to AFP by team manager Fatih Buyuk.

From Barron's • Feb. 24, 2026

Those early demonstrations were rudimentary, with the drones able to fly together at a set distance and little else.

From The Wall Street Journal • Jan. 25, 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

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!

ACT Vocabulary List

Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!

I'm New Here...

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!