Synonyms of rudimentary

rudimentary

adjective

ˌrü-də-ˈmen-tə-rē 

1

as in primitive

belonging to or characteristic of an early level of skill or development

rudimentary shelters built by prehistoric peoples

Synonyms & Similar Words

• primitive
• simple
• basic
• crude
• ancient
• low
• early
• old
• obsolete
• antiquated
• rude
• homely
• unsophisticated
• uncomplicated
• antique
• embryonic
• primordial
• undeveloped
• underdeveloped
• primeval
• past
• old-fashioned
• backward
• quaint
• out-of-date
• homespun
• aged
• antediluvian
• old-time
• hoary
• dated
• outworn
• musty
• fusty
• unmodernized
• oldfangled
• passé

Antonyms & Near Antonyms

• advanced
• higher
• evolved
• developed
• high
• late
• complex
• sophisticated
• complicated
• intricate
• involved
• mature
• modern
• perfected
• grown
• ripe
• matured
• new
• civilized
• refined
• current
• enlightened
• contemporary
• ripened
• latest
• full-blown
• cultivated
• present-day
• newfangled
• state-of-the-art
• novel
• up-to-date
• now
• modernistic
• mod
• ultramodern
• space-age
• new-fashioned
• supermodern

2

as in basic

of or relating to the simplest facts or theories of a subject

had only a rudimentary knowledge of science

Synonyms & Similar Words

• basic
• elementary
• introductory
• fundamental
• underlying
• essential
• simple
• elemental
• rudimental
• basal
• beginning
• preliminary
• meat-and-potatoes
• abecedarian
• primitive
• primary
• primal
• preparatory
• primordial
• uncomplicated
• prime
• important
• crucial
• crude
• key
• primeval
• rude

Antonyms & Near Antonyms

• advanced
• complex
• sophisticated
• extensive
• detailed
• elaborate
• complicated
• intricate
• higher
• high
• evolved
• developed
• refined
• convoluted

Example Sentences

Recent Examples of rudimentary

The series also features rare live footage of chimpanzees using rudimentary tools (twigs or branches) to fish for algae at the bottom of a pond (see top video). — Jennifer Ouellette, ArsTechnica, 4 Oct. 2026

That effectively turns the window unit into a rudimentary ground-source heat pump. — Kaif Shaikh, Interesting Engineering, 23 Sep. 2026

People in New York City looked up in shock and dismay; people everywhere else watched their favorite anchors on old-fashioned television sets and looked for updates on very rudimentary versions of news websites. — Brian Stelter, CNN Money, 10 Sep. 2026

Within these confines the main characters register as aliens; Wendy and Jack aren’t just flustered but people who seem to have never been inculcated with a rudimentary sense of social propriety. — Vadim Rizov, Variety, 2 Sep. 2026