We use cookies for essential site function and analytics. How we use cookies

Wordabulary

empirical

UK /ɪmˈpɪr.ɪ.kəl/ US /ɪmˈpɪr.ɪ.kəl/ Syllables: em-pir-i-cal

Pronunciation
Adjective C1 Advanced Technical

Quick answer

Based on observation or experiment rather than on theory or opinion alone.

Empirical describes knowledge or evidence that comes from observation and experiment rather than from theory or opinion. An empirical study measures what really happens, and an empirical claim can be tested. In science, medicine and economics, empirical results are valued because anyone can check them. The opposite idea is theoretical, which means based on ideas rather than tests.

"The study offered empirical evidence that the drug actually worked."

Meanings

  1. Based on observation or experiment rather than on theory. (technical, science)
  2. Learned from experience.

Example sentences

  • "The report offers empirical evidence that the drug works."

    Level C1, Meaning 1

  • "We need empirical data, not opinions."

    Level C1, Meaning 1

  • "Their conclusions rest on empirical research."

    Level C1, Meaning 1

  • "It is an empirical question that experiments can answer."

    Level C2, Meaning 1

Synonyms and antonyms

Synonyms

observed experimental

Antonyms

theoretical

Look-alikes and common mistakes

  • theoretical : Theoretical means based on ideas and reasoning. Empirical means based on observation and testing.
  • anecdotal : Anecdotal means based on a few personal stories. Empirical evidence is collected carefully and tested.

Word family and forms

empirically empiricism empiricist empiric

Word partners

Words and phrases that often go with "empirical".

  • empirical evidence
  • empirical research
  • empirical data
  • an empirical study
  • empirical results
  • empirical test

Origin

Empirical is built from the older word empiric, which goes back to a Greek word meaning experienced. The idea of learning from experience has stayed at the heart of the word.

Checked against: Wiktionary, the free dictionary, Merriam-Webster Dictionary, Dictionary.com.

How to remember it

Think "try it and see": empirical knowledge comes from experience and tests, not from armchair ideas.

Test yourself

Which word fits the gap? "The report offers _____ evidence that the drug works."

Answer: empirical

In your own words, what does "empirical" mean?

Based on observation or experiment rather than on theory or opinion alone.

Learn next at C1

Sources and credits

Last reviewed October 19, 2026. Report a mistake on this page

Practice "empirical" until it sticks

A free account gives you spaced repetition, quizzes and progress tracking.

Sign up free