Greek is among the most culturally significant and historically resilient languages in the world.
With written records dating back to 1450 BC and the Mycenaean period, Greek has the longest documented history of any living Indo-European language. Whereas many other ancient languages, like Latin or Old English, evolved into entirely different tongues or went extinct, Greek has maintained a continuous, recognizable identity through the ages. Over the past 3,500 years or so, Greek grammar has been simplified. Many cases have been dropped, and the pronunciation has shifted significantly. Yet a speaker of modern Greek can still recognize many roots, grammatical structures, and even specific words found in Homer's Iliad, written nearly 2,800 years ago.
As such, Greek serves as a bridge between ancient wisdom and modern thought.
Greek, not Latin, was the original language of the New Testament. The Etruscan, Latin (Roman), Cyrillic (used in Russian, Bulgarian, and Serbian), and Coptic scripts all evolved directly from variations of the Greek alphabet.
The word "Algebra" is Arabic, but the language of mathematics is overwhelmingly Greek. Terms like "asymptote," "axiom," "geometry," "hypotenuse," "logic," "parabola," "polyhedron," and "trigonometry" are all Greek. Even the word "mathematics" comes from the Greek mathēma, meaning "that which is learned." The Greek letters Pi, Alpha, Beta, Sigma, Delta, and Omega serve as universal shorthand in mathematics and physics.
Greek is the mother tongue of science. When scientists discover something new, they almost always turn to Greek (e.g.: "Galaxy" comes from galaxis, meaning "milky"). Even the word "atom" comes from the Greek atomos, meaning "indivisible"—a perfect description of what scientists originally thought the smallest particle of matter was.
Many words in English use Greek roots. For example, the prefix "tele-" (far), and "phone" (sound) or "vision" (sight), created the words "telephone" and "television."
You likely speak a little Greek every day without realizing it—and more than a little if you work in tech, medicine, or academia. About 15 percent of the English language—including words like "biology," "chaos," "crisis," "democracy," "echo," "geometry," "grammar," "music," "nostalgia," "ocean," "oxygen," "ozone," "photosynthesis," "planet," "psychology," "rhythm," "strategy," "symphony," "system," "theater," "titanic," and “theory”—is derived from Greek. If you count the words that passed through Latin to get to English, that percentage is even higher. The Latin word "philosophia," for instance, was borrowed from Greek.
Many expressions we use in English today are "calques," or literal translations of ancient Greek phrases. For example, "to cross the Rubicon" or "the Midas touch" were translated directly from Greek literature and mythology into Latin and then into English.
Did you know that the Greek question mark looks like the English semi-colon?
Here are nine more surprising facts about the Greek language—the oldest Indo-European language still spoken today.
The Greeks invented the Vowel.
Before the Greeks adopted the Phoenician alphabet around 800 BC, most writing systems were "abjads" consisting only of consonants. The Greeks were the first to systematically assign letters to vowel sounds, repurposing unused consonant letters to create the first true vowels (alpha, epsilon...)
Greek is the Alphabet's namesake.
Greeks like to say that they invented the alphabet. After all, the Greek alphabet's inclusion of vowels made "phonetic" reading possible for the first time and was far more accurate for recording human speech. Greek letters were also used as numerals before the Arabic numeral system became standard.
The Greek alphabet became the blueprint for both Latin/ Roman and Cyrillic scripts. Fittingly, the word "alphabet" is itself a portmanteau of the names of the first two letters of the Greek script: alpha and beta.
Incidentally, while the Greek alphabet has 24 letters, it used to have more. In ancient times, there were letters like "Digamma," "San," and "Qoppa." These were eventually dropped from the script, though "Qoppa" lived on as the basis for the Latin letter "Q."
"Digamma" represented the "w" sound, as in "win." It died out in the classical era because the "w" sound disappeared from the language. However, its ghost remains in etymology. The word oinos (wine) was originally woinos. When Latin borrowed the word, the Romans still heard the "w" sound, leading to their word vinum (and, eventually, our "wine").
Greek has the largest number of words of any language.
According to the Guiness Book of World Records, the Greek language has an estimated five million distinct word forms, due to its complex morphology and its continuous evolution over millennia.
Greek holds the record for the longest word in literature.
Greek loves compounding words, which allows for extreme length. In Aristophanes' play Assemblywomen (391 BC), there is a fictional dish name:
Lopadotemachoselachogaleokranioleipsanodrimhypotrimmatosilphioparaomelitokatakechymenokichlepikossyphophattoperisteralektryonoptekephalliokigklopeleiolagoiosiraiobaphetraganopterygon
It describes a dish containing all kinds of leftovers.
Greek has a Middle Voice.
While English mostly uses active ("I wash the car") and passive ("The car is washed by me") voice, Greek retains a middle voice. This is used when the subject of the sentence is performing an action on themselves or for their own benefit.
For example, the active verb loúō (λούω) means "I wash [someone/something]." The middle voice loúomai (λούομαι) means "I wash myself." It's a grammatical nuance that adds a layer of precision English lacks.
The accent system in Greek changes the meaning.
Ancient Greek was a tonal language, much like modern Mandarin Chinese. Words used pitch accent, whereby the tone of the voice (rising, falling, or rising-falling) on a specific syllable could completely change a word's meaning. This musicality was crucial in poetry and rhetoric. While this system has been lost in modern Greek—where it has been replaced by a stress accent—its traces remain.
Modern Greek uses a "monotonic" accent system (a single mark over a vowel). Where you place that mark changes the meaning of the word entirely.
For example:
Κόρη (Kóri): Daughter.
Κορή (Korí): Pupil (of the eye).
Even though these two words are spelled the same, the stress shifts the definition. In Greek, rhythm is as important as the letters themselves.
Greek has a unique way of saying "Yes" and "No."
Nai (ναι) sounds like "Nay" in English, but it actually means "Yes."
Meanwhile, the Greek word for "No" is Ochi (όχι).
This is a common trap for English speakers!
Body language is intrinsically linked to Greek verbal communication. For many Greeks, a slight upward jerk of the chin combined with a "tsk" sound actually means "no." Tourists may confuse this for "yes" or a gesture of indifference, leading to comical misunderstandings.
Greek has a unique way of ranking love.
The English language struggles with the word "love," using it for everything from pizza to a spouse. Ancient and Modern Greek are much more precise, using different words for different types of affection:
Eros: romantic, passionate love
Philia: deep friendship or platonic love
Storge: natural, familial affection (like a parent to a child)
Agape: selfless, universal, unconditional love
The Original "LOL" and "OMG."
The acronyms that make up modern internet slang have ancient roots.
The ancient Greeks used a system called "nomina sacra" (sacred name). They would write the first and last letter of a important word to save space and show reverence.
ΘΣ for Θεός (Theos: God)
ΚΣ for Κύριος (Kyrios: Lord)
This is strikingly similar to how we use LOL (Laughing Out Loud) or OMG (Oh My God).