How Hebrew Makes Adverbs (It Mostly Doesn't)

English has one move for this and it never fails: take the adjective, add -ly, and you have an adverb. Quick → quickly, careful → carefully, personal → personally. Hebrew has no equivalent general suffix. Ask "how do I make an adverb from this adjective?" and the honest answer is that there is no single machine to reach for — you pick one of four strategies, and which one works is a fact about the particular word.

Be careful with the strong version of that claim, though, because it is false. Hebrew has no one general adverbial suffix; it does have productive means. The ־ִית class (אישית, רשמית, סופית, יחסית, מיידית, אוטומטית, בלעדית) keeps taking new members, and ב + abstract noun is close to a rule you can apply. What is missing is the guarantee that any given adjective can be run through either of them.

The four strategies

Strategy 1: use the adjective as it stands

The commonest manner adverbs in the language are simply masculine singular adjectives standing next to a verb, with nothing added and — this is the part that catches people — no agreement. מהר, טוב, יפה, חזק and קשה do not change for a feminine subject or a plural one, because in this position they have stopped being adjectives. (The formal register has a dedicated word for one of them: היטב heitév is the careful-writing equivalent of adverbial טוב — היא מדברת עברית היטב.)

Strategy 2: ב plus an abstract noun

Take an abstract noun — a quality, an emotion, a manner — and prefix ב, and you have a manner adverb: שקט shéket → בשקט beshéket, זהירות zehirút → בזהירות bizhirút, מהירות mehirút → במהירות bimhirút, קלות kalút → בקלות bekalút, סבלנות savlanút → בסבלנות besavlanút, שמחה simkhá → בשמחה besimkhá. Many of them carry the abstract ending ־וּת, but the pattern is not confined to it — שקט and שמחה have no ־וּת and take ב־ just the same. This is the nearest thing Hebrew has to a general rule, it works across registers, and it is the strategy to guess with when you do not know the word.

Strategy 3: the suffixed classes

־ִית is the productive one. It sits on the feminine of a nisba adjective and gives you adverbs of manner and of framing: אישית personally, רשמית officially, סופית finally/for good, יחסית relatively, מיידית immediately, אוטומטית automatically, בלעדית exclusively. Loanwords join it freely, which is what marks it as alive.

־וֹת is the frozen one: a handful of feminine-plural adjectives locked into adverbial use — קשות severely, רבות greatly, ארוכות at length, נחרצות emphatically. These are predominantly written — journalism above all — but not exclusively so, and calling them literary would overstate it: ויקימילון files קשות as a plain adverb and cites it from a 2020 news item quoting a reality-television contestant. Suffixed adverbs has the evidence. Filed with them are the frozen leftovers that fit nowhere else, above all לאט "slowly", which looks like ל + a noun and is not analysable as anything a modern speaker can reproduce.

Strategy 4: the words that were never anything else

A large part of the everyday adverb stock is not derived from an adjective at all and never was: תמיד always, כבר already, מיד at once, אולי maybe, עדיין still, אתמול yesterday, שוב again. You learn these as vocabulary, not as forms, and they cover time, frequency and stance rather than manner.

One meaning, three renderings

Here is why the absence of a single suffix is a feature rather than a hole. The same idea takes three shapes, and the choice between them is stylistic, not grammatical — nothing in the sentence forces any of them.

Position is doing the work

Because no suffix separates the two jobs, the same word is an adjective or an adverb depending only on where it sits. English speakers rarely have to think about this, because quick and quickly are different strings — and where English does keep one form for both jobs (a hard exam, work hard) it feels like a quirk. In Hebrew it is the norm: קשה beside a noun is the adjective "difficult", קשה beside a verb is the adverb "hard", and the slot is the only evidence you get.

Where in the clause a manner adverb actually lands is its own question, handled on manner adverbs and where they sit. That aside, this has one immediate practical consequence: the adverb never agrees, and the adjective always does. If you see a masculine singular form sitting beside a feminine subject, it is not an error — it is the signal that the word is being used adverbially.

Common Mistakes

1. Inflecting the adverb to match the subject. After weeks of drilling agreement, this feels obligatory. It is exactly wrong.

2. Dropping the ב from an abstract-noun adverb. You learn סבלנות = "patience", English says patiently in one word, and the preposition quietly disappears.

3. Using the adverb where the adjective belongs. The mirror image of the first error, and it appears as soon as מהר is learned: מהר modifies verbs only, and a noun needs מהיר / מהירה.

4. Using the bare nisba adjective instead of its ־ית adverb. אישי is "personal"; the adverb is אישית, and the two are not interchangeable.

Key Takeaways

• Hebrew has no single general adverbial suffix. It does have productive means — the ־ִית class and ב + abstract noun — but no guarantee that a given adjective can go through either.
• Four strategies: the bare masculine singular adjective (מהר, טוב, קשה); ב + abstract noun (בשקט, בקלות); the suffixed ־ִית and frozen ־וֹת classes (אישית, קשות); and a large stock of simple lexical adverbs (תמיד, כבר, אולי).
• ב + abstract noun is the one to guess with when you do not know a word's adverb.
• ־ִית is alive and takes loanwords (אוטומטית); ־וֹת is closed and predominantly written — but not literary-only.
• One meaning often has two or three renderings — מהר, במהירות, בזריזות — and the choice is stylistic, not grammatical.
• Because nothing marks the difference, position is what tells you whether a word is an adjective or an adverb — and the adverb never agrees, which is the clue.
• בצורה / באופן + adjective always works and always sounds translated. Keep it for the gaps.