Chai (חַי)

Chai: the Hebrew meaning

At its simplest, chai is an ordinary Hebrew word. It means living, alive, or a living thing, and a Hebrew speaker uses it in everyday sentences the way an English speaker uses “alive.” A fish in a tank is chai. So is a plant, a person, or a tradition that is still practised.

What gives the word its weight is that Hebrew rarely talks about life in the abstract with a single noun. The word for life is chayim (חַיִּים) — and it is grammatically plural. “Life” in Hebrew is, literally, “lives.” Jewish commentators have read a great deal into that plural: that a life is never only one thing, that it includes what comes after, that no one lives alone. Whatever you make of the interpretations, the grammar is real, and it is why the toast is l’chaim rather than l’chai.

So the Hebrew meaning of chai sits on two levels at once. It is a plain adjective about being alive, and it is the root of every Hebrew word for life, which is why a two-letter word ended up worn on necklaces, printed on cheques, and shouted at weddings.

How to pronounce chai (and why it isn’t the tea)

Chai rhymes with “high.” The opening sound is the problem for English speakers: it is not the “ch” of chocolate but a breathy sound made at the back of the throat, like the end of the Scottish loch or the German Bach. The same sound opens challah and Chanukah.

That is the whole difference between the Hebrew word and the drink. Masala chai, the spiced tea, comes from the Hindi and Persian word for tea and is pronounced with an English “ch.” The two words share a spelling in English and nothing else — which is also why searching for chai turns up tea recipes next to Jewish jewellery.

Why chai equals 18

Every Hebrew letter doubles as a number, a system called gematria. Chet, the eighth letter of the alphabet, is worth 8. Yud, the tenth, is worth 10. Add the two letters of chai together and you get 18.

That one sum turned 18 into the Jewish number for life. Where other cultures treat 7 or 8 as lucky, Jewish custom treats 18 as the number that carries a blessing — not luck in the sense of chance, but a wish for life attached to whatever the number touches.

The number shows up in older places too. The central prayer of every Jewish service is called the Shemoneh Esrei, the Eighteen, after its original eighteen blessings. It kept the name even after a nineteenth blessing was added in the early rabbinic period, which is a good illustration of how firmly the number had attached itself.

Giving chai: gifts in multiples of 18

The most practical consequence of the Hebrew meaning of chai is money. Gifts at bar and bat mitzvahs, weddings and births, and donations to charity are very often given in multiples of 18. The gesture is the blessing: a gift of 36 is not simply 36, it is life given twice.

The currency does not matter. Eighteen dollars, eighteen shekels and eighteen pounds all carry the same meaning.

There is no fixed etiquette about which multiple to give. People pick the one that fits their budget and the occasion, and the choice of 18 matters more than the size of the multiple.

L’chaim: to life

The best-known use of the word is the toast. L’chaim (לְחַיִּים) means “to life,” and it is raised over wine or spirits at weddings, bar and bat mitzvahs, a Shabbat table, a new job, a baby, or nothing in particular.

The toast uses the plural chayim, not the singular chai, for the reason above: in Hebrew, life is plural. Some people answer a l’chaim with l’chaim tovim u’l’shalom, “to a good life and to peace,” though most simply say l’chaim back.

Chai in everyday Hebrew

Once you know the root, you start hearing it everywhere. These are some of the phrases built on it.

Am Yisrael chai

Of all the phrases built on the word, Am Yisrael chai — the people of Israel lives — carries the most weight today. It is less a sentence than a statement of fact made in defiance of the alternative.

The phrase was popularised by Shlomo Carlebach’s 1965 song, written for the movement to free Soviet Jewry, and it has been sung at rallies, at the Western Wall, and at gatherings of grief and celebration ever since. It is sung at weddings and at funerals. In Israel since 2023 it has been heard constantly — on protest signs, at memorials, and in the voices of people who, at the worst moments, reach for the simplest possible claim: we are still here.

That is the fullest version of the Hebrew meaning of chai. Not only alive, but alive against the odds, and saying so out loud.

The chai symbol and chai necklaces

The two letters chet and yud, set together, have become one of the most recognisable Jewish symbols after the Star of David. They appear on pendants, rings, bracelets, mezuzah cases, wall art and, increasingly, tattoos.

Using the letters as a worn symbol is usually traced to Eastern Europe, although the letters were used symbolically long before that. Chai jewellery became a fixture of American Jewish life in the second half of the twentieth century, and it remains one of the most common gifts for a bar or bat mitzvah.

Part of the appeal is that it says something without saying too much. A chai is unmistakably Jewish, but what it declares is not a theology or a politics. It is simply a word for life.

Chai in Jewish names

Several of the most enduring Jewish names come from the same root. Chaim, life, and Chaya, living, are the most direct. Yechiel means may God live. There is a long custom of adding the name Chaim to someone who is seriously ill, in the hope that a name meaning life will help to change what has been decreed.

You can look up the meaning, Hebrew spelling and background of these and more than a hundred other names with the Jewish name meanings tool.

Chai in the Torah

The word runs through the Torah from its opening chapters. Eve’s Hebrew name, Chava, comes from the same root: Genesis explains that she was named as the mother of all living. The tree in the Garden of Eden is the etz ha’chayim, the tree of life.

The best-known use comes near the end of Deuteronomy, where Moses sets out the choice in front of the people: life and death, blessing and curse. The instruction that follows is two words long — u’vacharta ba’chayim, choose life. It is probably the most compact summary of Jewish ethics in the text, and it is the same root as the necklace.

Chai Hebrew meaning: common questions