Standard Lemma guide

rationalist

noun · 4 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

A person who follows the philosophy of rationalism.

Definition source: English Wiktionary via Wiktextract

Topics: human-sciences, philosophy, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A member of the rationalist community.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

adjective

Meaning 3

of or relating to or characteristic of rationalism

Definition source: Princeton WordNet 3.0

Examples

  • rationalist philosophy

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

someone who emphasizes observable facts and excludes metaphysical speculation about origins or ultimate causes

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: positivist

Antonyms: none provided

Broader terms: nonreligious person

Narrower terms: logical positivist

History

Etymology

From Middle French rationaliste; rational + -ist.

Across languages

Translations

16 source translations are retained for this English entry.

  • Arabic: عَقْلَانِيّ (ʕaqlāniyy) — person
  • Czech: racionalista — person
  • Danish: rationalist — person
  • Dutch: rationalist — person
  • Greek: ορθολογιστής (orthologistís) — person
  • Indonesian: rasionalis — person
  • Irish: réasúnaí — person
  • Latin: rationalista — person
  • Latvian: racionālists — person
  • Latvian: racionāliste — person
  • Malayalam: യുക്തിവാദി (yuktivādi) — person
  • Telugu: హేతువాది (hētuvādi) — person
  • Turkish: akılcı — person
  • Turkish: usçu — person
  • Turkish: akliyeci — person
  • Turkish: rasyonalist — person