The מקף and Hyphenated Prefixes

Hebrew has a hyphen of its own. It is called the מקף (makáf, "joiner"), it is Unicode U+05BE, and it looks like this: ־. Set it beside the Latin hyphen and the difference is immediate:

• maqaf: בית־ספר
• Latin hyphen: בית-ספר

The maqaf rides along the top of the line, level with the upper edge of the letters, because Hebrew letters hang from a notional ceiling rather than sitting on a baseline. The Latin hyphen sits at mid-height, where it looks like a mark that has slipped. Almost everyone types the Latin one anyway — it is on the keyboard and the maqaf is not — so you will meet both, and you should be able to tell them apart on sight.

What the maqaf still joins

The third row is where the maqaf is genuinely alive. דו־, תלת־, רב־, בין־, תת־, על־, חד־ and אי־ are not independent words in modern Hebrew — you cannot say דו on its own and mean "two" — so they need something to bind them to the word they modify, and the maqaf is what does it. This is the closest thing Hebrew has to the English bi-, tri-, multi-, inter-, sub-, non- series, and like those it produces new vocabulary constantly.

אי־ deserves a note of its own. It is the standard way to negate a noun — אי־הבנה "misunderstanding", אי־שוויון "inequality", אי־נוחות "discomfort", אי־ודאות "uncertainty" — and here the maqaf is not optional decoration, because אי standing alone is the noun "island". The mark is what tells you which reading is intended.

The classical job: one word for the purposes of stress

In pointed text — the Tanakh, the siddur, poetry — the maqaf does something a Latin hyphen never does. It fuses two words into a single stress unit. The first word gives up its own accent, leans on the second, and its vowel shortens accordingly.

One caveat on the middle row: older printed Bibles set that vowel with an ordinary kamatz sign, and only the reader's grammar told them it was the short o. The distinct kamatz katan sign ׇ used above is a modern typographic refinement, now standard in careful digital texts.

That table explains a spelling puzzle that otherwise looks arbitrary. In modern unpointed Hebrew you write כל before a noun — כל הזמן, כל אחד — and הכול when the word stands on its own. The reason is buried in the classical grammar: bound to what follows, the word was the short כׇּל־ form; free-standing, it kept the full כֹּל, which plene spelling then writes with a ו. The rule is on ktiv male versus ktiv haser; the maqaf is where it comes from.

Modern usage is genuinely inconsistent, and that is fine

Do not spend effort agonising over whether a given compound "should" take a maqaf. Israeli practice has drifted, and it has drifted in three different directions at once:

• Towards a plain space. Most newspapers and most everyday writing now print בית ספר, בית חולים, עורך דין, כל הזמן — no mark at all.
• Towards a solid word. Some compounds fused: כדור־רגל became כדורגל, and בין־לאומי is very often written בינלאומי. Older maps and signage used the maqaf in double-barrelled place names (רמת־גן, כפר־סבא); today those are written with a space.
• Holding firm. The prefix series — דו־, תלת־, רב־, בין־, תת־, אי־, חד־ — keeps its maqaf in careful writing, and the Academy of the Hebrew Language still prescribes it there.

The Academy permits both the joined and the spaced form in a great many compounds. So treat this as a recognition skill first: know what the mark means when you meet it, and when you write, copy whatever the word looks like in the sources you read.

Why the wrong character actually matters

Beyond the height, there is a mechanical difference. The maqaf U+05BE is a strong right-to-left character: the bidirectional algorithm treats it as Hebrew. The Latin hyphen-minus U+002D is not — it is a neutral that takes its direction from whatever is around it. Inside a run of Hebrew letters nothing goes wrong, but put a digit, a Latin word or a line boundary on one side of it and the neutral hyphen can resolve to the wrong direction and appear to jump. This is the same machinery described on punctuation in a right-to-left text, and it is why using the proper mark is more than pedantry.

The keyboard question — how to actually type ־ when it is not on the standard layout — belongs to typing Hebrew.

Common Mistakes

1. Typing the Latin hyphen. It is the reflex, and it renders at the wrong height in Hebrew type.

2. Putting a space after אי. The mark is doing semantic work here, and without it the phrase means something else entirely.

3. Writing a bound prefix as a free word. With דו־, בין־, תת־ and the rest, the two legitimate spellings are the maqaf and the solid form. A space is not one of them.

4. Using the maqaf between digits. Phone numbers, ID numbers, date and page ranges are written with the ordinary Latin hyphen or an en dash, not with a maqaf — the maqaf joins Hebrew words, and inserting a strong right-to-left character into a run of digits is exactly the way to make a number render in an order you did not intend.

5. Reading it as a dash. A maqaf is a joiner, not a pause. Where English would open a parenthetical with an em dash, Hebrew uses a dash too — a longer, mid-height mark with spaces around it. The two are different characters doing opposite jobs: one glues words together, the other separates clauses.

Key Takeaways

• The maqaf ־ (U+05BE) is Hebrew's own hyphen: it rides at the top of the line, not at mid-height, and it is a strong right-to-left character where the Latin hyphen is neutral.
• It joins frozen compounds (בית־ספר), fixed particle phrases (על־פי, כל־כך, אי־אפשר) and, most productively, the bound prefixes דו־, תלת־, רב־, בין־, תת־, על־, חד־ and אי־.
• With אי־ the mark carries meaning: אי on its own is "island", so אי־הבנה and "אי הבנה" are different phrases.
• In pointed text the maqaf makes two words one stress unit and shortens the first word's vowel — אֵת → אֶת־, כֹּל → כׇּל־ — which is where modern כל / הכול comes from.
• Modern practice is genuinely inconsistent: many compounds are now written with a space or fused solid. Learn to recognise the mark; do not agonise over producing it.
• Hebrew never hyphenates at line breaks, so a hyphen inside a Hebrew line is always part of the word.