philosopher
n.-
1 academic or thinker (n.) B2 Upper Intermediatea person who studies or writes about big questions, like the meaning of life or how we should behave.
a scholar or expert who contributes to philosophical inquiry, particularly regarding ethics, logic, and the nature of reality.
ExampleThe ancient Greek philosopher Plato wrote many books about how to build a fair society.
ExampleModern philosophers often debate the ethical implications of artificial intelligence and how it might redefine our understanding of personhood.
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2 calm person (n.) C1 Advanced Archaicsomeone who stays calm and thinks clearly when things go wrong.
a person who meets difficulties with calmness and composure, applying rational principles to their conduct.
ExampleHe was a bit of a philosopher and didn't get upset when his car broke down.
ExampleShe faced the loss of her fortune like a true philosopher, remaining remarkably composed while those around her panicked.
UsageIn modern English, this sense is usually expressed by the adjective 'philosophical'.
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3 early scientist (n.) C2 Proficiency Archaic Sciencein the past, a person who studied any branch of knowledge, including what we now call science.
a student or expert in any branch of knowledge, particularly natural sciences before they were formally distinguished from philosophy.
ExampleIn the 1600s, a philosopher might spend his time studying both stars and logic.
ExampleIsaac Newton was often described as a natural philosopher, as the modern distinction between physics and philosophy had not yet been fully established.
- polymath
- naturalist
From Middle English philosophre, from Anglo-Norman or Middle French philosophe, from Latin philosophus, from Ancient Greek φιλόσοφος (philósophos, literally “lover of wisdom”) + -er. Credited as having been coined by Pythagoras to describe himself. Displaced native Old English ūþwita.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.
Last updated June 20, 2026