What does it mean word for word?
τί is the neuter form of the interrogative pronoun τίς, 'who, which'. The same stem covers 'who' for people and 'what' for things, changing only its grammatical ending.
Which one should you use?
τί alone asks 'what'. Combined with διά, 'because of', the phrase διὰ τί means 'why', literally 'because of what'.
Is there a formal and an informal way to say it?
τί is used in every register, from Socratic philosophical questioning to everyday curiosity.
Is it said differently in some regions?
The word and its uses are stable and well attested across the entire span of classical Greek literature.
How does it change in a sentence?
τί changes case like any pronoun: τίνος (genitive, 'of what'), τίνι (dative, 'to what'), while staying 'what' in meaning throughout.
How do you pronounce it?
τί carries an accent mark distinguishing it from the unaccented enclitic τι, meaning 'something', a small but important difference in written Greek.
What mistakes should you avoid?
Confusing the accented question word τί, 'what?', with the unaccented τι, 'something', changes the meaning of a sentence entirely, a classic trap for beginners reading Greek texts.
When do people say it?
Socrates's famous method of philosophical questioning in Plato's dialogues depends heavily on short, pointed uses of τί, repeatedly asking 'what is X?' to test a definition.
Did you know?
- The accent on τί is one of the few single marks in Greek that changes meaning entirely, separating the question word 'what?' from the unaccented τι, 'something'.
- Plato's dialogues are built around short, repeated uses of τί ἐστι, 'what is', as Socrates presses his companions to define their terms precisely.
Examples in context
- τί ἐστι τοῦτο?ti esti touto?What is this?
- τί λέγεις?ti legeis?What are you saying?
- διὰ τί τοῦτο ποιεῖς?dia ti touto poieis?Why are you doing this?
Example conversation
Socrates questions a young man named Euthydemus about justice.
- Socratesτί ἐστιν ἡ δικαιοσύνη?ti estin he dikaiosyne?What is justice?
- Euthydemusτὸ ἀποδιδόναι τὰ ὀφειλόμενα.to apodidonai ta opheilomena.Giving back what is owed.
- Socratesδιὰ τί τοῦτο δίκαιον?dia ti touto dikaion?Why is this just?
- Euthydemusοὐκ οἶδα, ὦ Σώκρατες.ouk oida, o Sokrates.I do not know, Socrates.
