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adjective

empirical

/ɪmˈpɪrɪkəl/  ·  say it: im·PIR·i·kuhl

based on observation or experiment

In Formal & Academic

In more detail

1. (adjective) based on observation, experience, or experiment rather than theory or pure logic

2. (adjective) relying on or tested by practical experience rather than theoretical knowledge

Examples

How to use empirical

Empirical describes knowledge or methods grounded in real-world observation and testing rather than speculation or theory. It is commonly used in academic, scientific, and research contexts to emphasize that conclusions are supported by actual data or experience. Empirical evidence is stronger and more reliable than theoretical claims alone.

Register: formal

Common phrases

Synonyms

experimental · practical · evidence-based · observational · experiential

Opposites

theoretical · abstract · hypothetical

Word family

empirically (adverb) · empiricism (noun) · empiricist (noun)

A common mistake

Learners sometimes confuse empirical with imperial (relating to an empire) or empiric (which means relying on experience but is now archaic; empirical is the standard modern form).

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