In short

You already know the binyan — the vocalic mould that a root drops into to make a verb. The noun side of the language works the same way: a root is poured into a mishkal (משקל, “weight / measure”; plural משקלים, mishkalim), a fixed template of vowels and affixes that turns three consonants into a noun. The mishkal is the noun’s binyan. And just like a binyan, it carries meaning: מספרה (mispara) is “a barbershop” because מ־…־ה is the place template, while מזלג (mazleg) is “a fork” because מ־ before the root marks an instrument. Learn the productive templates and you can guess both what a new noun means and how it pluralizes.

The second half of the lesson is a special class of nouns — the segholate nouns (שמות סגוליים, shemot segoliyim). They are the ones that break Hebrew’s normal “stress the last syllable” rule: מלך (melekh, “king”) and ספר (sefer, “book”) are stressed on the first syllable, and their plurals reshape the whole stem — מלכים (melakhim), ספרים (sfarim). These are exactly the “irregular” plurals you met back in lesson 4; here you finally see the machine behind them.

The rule

• A mishkal is a fixed vowel-template that gives a root a meaning-domain. Where the binyan makes verbs, the mishkal makes nouns. Slot a root into מ־…־ה and you get a place; into מ־ you get a tool; add ־ן to a doer and you get an agent. The template is productive: given a new root you can predict which noun it yields, and given a noun you can often read its meaning off its shape. Because the shape is what matters, we write templates with dummy consonants (C) and the actual vowels: miCCaCa, maCCeC, CaCCan, CaCaC, CaCeCet.

• Place — miCCaCa (מ־…־ה), feminine. This template names where an activity happens: מסעדה (mis’ada, “restaurant”, from ס־ע־ד “to dine”), מספרה (mispara, “barbershop”, from ס־פ־ר “to cut hair”), מכללה (mikhlala, “college”, from כ־ל־ל). Because it ends in ־ה it is feminine — its adjectives and its plural (־ות: מסעדות, mis’adot) follow the feminine.

• Instrument — maCCeC (מ־…), masculine. The same מ־ prefix but a different vowel-shape names a tool: מזלג (mazleg, “fork”), מברג (mavreg, “screwdriver”), מפתח (mafteach, “key”). These are masculine, but their plural is lexical — several take ־ות while staying masculine (מזלג → מזלגות, mazlegot; מפתח → מפתחות, maftechot), so learn the plural with the noun. Keep it apart from the place template — same prefix letter, different mould, different gender.

• Agent — CaCCan (־ן), a habitual doer. Ending the root in ־ן makes “the one who habitually does X”: שקרן (shakran, “liar”, from ש־ק־ר “to lie”), רקדן (rakdan, “dancer”, from ר־ק־ד “to dance”), and many more (שחקן, sachkan, “actor”; ספרן, safran, “librarian”). This same shape also builds character-trait adjectives — that overlap belongs to lesson 56.

• Profession — CaCaC, a trade. A short, high-frequency template names classic crafts: נגר (nagar, “carpenter”), טבח (tabach, “cook”), צבע (tzaba, “painter”), ספר (sapar, “barber”). Masculine, plural ־ים (נגרים, nagarim; טבחים, tabachim).

• Illness — CaCeCet (־ת), feminine. Ailments cluster in one feminine template (with small vowel variation): שפעת (shapa’at, “flu”), סכרת (sukeret, “diabetes”), אדמת (ademet, “rubella”), חצבת (chatzevet, “measles”). The ־ת ending makes them feminine, so any adjective agrees in the feminine (שפעת קשה, shapa’at kasha, “a bad flu”).

• Segholate nouns keep the stress on the FIRST syllable. Modern Hebrew normally stresses the last syllable, but a whole class of two-syllable nouns is stressed on the penultimate one (recall the word-stress lesson in the reading & pronunciation guide): MElekh (מלך), SEfer (ספר), BOker (בוקר), YEled (ילד), KElev (כלב). They are called segholate after the seghol vowel (“e”) that fills them. Two flavours by their vowels: e–e like מלך / ספר / ילד / כלב, and o–e like בוקר. Each hides a single “base” vowel that the twin-e surface masks.

• The segholate plural reshapes the stem and moves stress to the end. You do not just add ־ים to the singular. The stem collapses to the shape CCaCim — a helping “a” appears in the second slot, the first vowel thins out, and the stress jumps to the final syllable: מלך → מלכים (melekh → melaKHIM), ספר → ספרים (sefer → sfaRIM), ילד → ילדים (yeled → yelaDIM), כלב → כלבים (kelev → klaVIM), בוקר → בקרים (boker → bkaRIM). Feminine segholates do the same with ־ות: ארץ → ארצות (eretz → aratzot), דלת → דלתות (delet → dlatot).

• Scope note. The action-noun moulds קטילה / הקטלה (ktila / haktala) belong to the verbal noun in lesson 53; the relational ־י adjective patterns are lesson 56; and the construct-plural forms מלכי (malchei, “kings of”) / ספרי (sifrei, “books of”) are just smichut on these plurals — see the construct-state lessons. Here we stay on the derivational noun templates and the segholate plural itself.

Forms & patterns

Productive derivational mishkalim (dummy root shown as C; examples unvocalized as in real MIH):

Segholate nouns — the singular masks, the plural reveals (note the stress mark):

Two things a segholate does at once in the plural — take a normal ending and reshape:

Examples

Common mistakes

• seferim -> ספרים (sfarim) - a segholate does not just tack ־ים onto the singular; the stem collapses to CCaCim, so ספר → ספרים (sfarim), not seferim.
• melekhim -> מלכים (melakhim) - the plural re-stresses to the final syllable and an “a” surfaces in the second slot; don’t carry the singular shape into the plural.
• seFER / meLEKH (final stress) -> SEfer / MElekh - segholate singulars are the main exception to Hebrew’s usual last-syllable stress; keep the stress up front.
• מסעדה גדול -> מסעדה גדולה (mis’ada gdola) - the miCCaCa place template ends in ־ה and is feminine, so the adjective must agree in the feminine.
• שפעת חזק -> שפעת חזקה (shapa’at chazaka) - the CaCeCet illness template is feminine (the ־ת ending); agree in the feminine.
• מזלגים -> מזלגות (mazlegot) - מזלג is masculine, but its plural is ־ות; the adjective still agrees in the masculine (מזלגות גדולים, mazlegot gdolim).

Tips

• A noun’s mishkal tells you two things at once: its meaning-domain and its plural. See מ־…־ה and think “place, feminine, ־ות plural”; see ־ן on a doer and think “agent, CaCCan”.
• Watch the מ־ pair carefully: מ־…־ה is a place and feminine (מסעדה → מסעדות), while מ־ + the maCCeC vowels is a tool and masculine (מזלג → מזלגות). Same prefix letter, opposite gender.
• The illness template CaCeCet is a reliable feminine (שפעת, סכרת, אדמת, חצבת) — treat any ־ת ailment as feminine and its adjectives will fall into place.
• Segholates are the one big island of penultimate stress: say MElekh, SEfer, BOker, YEled, KElev with the stress on the first syllable, then flip it to the end in the plural (melaKHIM, sfaRIM, bkaRIM).
• Never build a segholate plural as “singular + ־ים”. Rebuild the stem to CCaCim first: מלך → מלכים, ספר → ספרים, ילד → ילדים, כלב → כלבים.
• Unvocalized spelling can hide two different mishkalim behind the same letters: ספרים is both sfarim (“books”, from segholate ספר sefer) and saparim (“barbers”, from profession ספר sapar). Let context and the mishkal decide the reading.
• This is the machinery behind the “irregular” plurals of lesson 4 — they were never random; they are segholate, and now you can generate them.