empirical
UK /ɪmˈpɪr.ɪ.kəl/ US /ɪmˈpɪr.ɪ.kəl/ Syllables: em-pir-i-cal
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
- Based on observation or experiment rather than on theory. (technical, science)
- Learned from experience.
Example sentences
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"The report offers empirical evidence that the drug works."
Level C1, Meaning 1
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"We need empirical data, not opinions."
Level C1, Meaning 1
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"Their conclusions rest on empirical research."
Level C1, Meaning 1
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"It is an empirical question that experiments can answer."
Level C2, Meaning 1
Synonyms and antonyms
Synonyms
Antonyms
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
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.
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Sources and credits
- Wiktionary, the free dictionary (CC BY-SA 4.0) · used for the origin, pronunciation · checked Oct 19, 2026
- Merriam-Webster Dictionary · used for the origin · checked Oct 19, 2026
- Dictionary.com · used for the origin · checked Oct 19, 2026
Last reviewed October 19, 2026. Report a mistake on this page