The Most Common Verbs Are Weak

"Weak" is a grammarian's word — it means a root that contains a consonant which doesn't behave like a normal consonant. נ, י, ו, the gutturals (א ה ח ע), and identical second-and-third letters all create weakness.

This sounds peripheral. It is not. The verbs to be, to say, to do, to give, to come, to go up, to know, to dwell, to rise, to make, to build — the verbs the Hebrew Bible uses tens of thousands of times — are all weak.

If you only learned the strong verb, you would be unable to parse most of the verbs on most pages of Genesis. This lesson is the map of the territory you must now master.

I-Nun — The Vanishing Nun

When a nun stands at the end of a closed syllable with no vowel under it, it assimilates into the next consonant — and that consonant takes a dagesh forte to compensate.

See a dagesh in the second root letter of an imperfect? Suspect an assimilated nun.

I-Aleph — The Quiescent Aleph

A small set of common verbs begin with aleph. In the imperfect, the aleph stops carrying its own consonantal sound and quiesces — the preceding vowel lengthens to a holem.

Only five verbs follow this pattern fully: אָכַל, אָמַר, אָבַד (perish), אָבָה (consent), אָפָה (bake). Memorize the list — every other I-Aleph verb behaves as a regular I-Guttural.

I-Yod / I-Vav — The Vanishing First Letter

Originally these verbs began with vav, but the vav shifted to yod in the perfect. In the imperfect, the first letter often drops out entirely, leaving a tsere under the preformative.

Tsere under the preformative + only two visible root letters = I-Yod imperfect.

Hollow Verbs — No Middle Consonant

The middle root letter is a vav or yod that has dissolved into a long vowel. The result is a verb that looks like it has only two consonants.

Hollow verbs are extremely common. The shape "consonant + long vowel + consonant" is your tell. Their paradigms are short and elegant once memorized.

III-He — The Shape-Shifting Ending

The "he" at the end of these roots is historically not a real he — it stands for an original yod. So in inflection, the final he mutates into ת, י, or simply drops.

III-He is the single largest class of weak verbs. Master it and you've conquered most of Genesis.

III-Aleph — The Silent Endpoint

A final aleph never closes a syllable audibly. The preceding vowel lengthens to compensate, and the aleph just sits there silently as a written marker.

The rules are gentle: simply lengthen the vowel before the aleph and pronounce as if the aleph were not there. Easiest of the weak classes once you learn the pattern.

Geminates — Doubled Letters That Collide

A geminate root has identical second and third letters. In many forms, the two collapse into a single doubled (dagesh forte) consonant, making the verb look like it has only two root letters.

Geminates are the trickiest class. They borrow rules from hollow verbs and overlap in odd ways. Treat them as a special advanced topic — Lesson 27 will give them full attention.

Doubly Weak Verbs

Some verbs are weak in two positions at once. Each weakness contributes its rules; the resulting forms are highly irregular but predictable once you decompose them.

Don't be intimidated. Doubly weak verbs are not new rules — they are old rules applied twice.

Identify the Class, Then Apply the Rules

When you meet an unfamiliar form, don't memorize the form — diagnose it. Run this checklist:

• Count the visible root letters. Only two? Suspect hollow, I-Nun, I-Yod, or geminate.
• Is there a dagesh forte in an unexpected letter? Probably an assimilated nun.
• Tsere under a preformative letter? Almost certainly I-Yod.
• Long vowel between two consonants and nothing else? Hollow.
• Does the form end in ה, ית, ת, י, or וּ with vowel changes before? III-He.
• Aleph at the end with a long vowel before it? III-Aleph.

Diagnose the class. Apply the class's two or three rules. The form decodes itself.

אָמַר — "To Say"

Over 5,300 occurrences. I-Aleph. Quiescent aleph in the imperfect. Recognize its forms by sight; you will meet them on every page.

If you can recognize וַיֹּאמֶר instantly, you have just unlocked thousands of narrative verses.

The Drill Plan

What You Now Know

• Six classes of weak verbs, named by which root position is weak: פ״נ, פ״א, פ״י/ו, ע״ו/י, ל״ה, ל״א.
• I-Nun: nun assimilates and leaves a dagesh forte in the second root letter.
• I-Aleph: aleph quiesces; the preceding vowel lengthens to holem (five verbs only).
• I-Yod: the yod drops in the imperfect, leaving a tsere under the preformative.
• Hollow: middle vav/yod has dissolved into a long vowel. Two visible letters.
• III-He: final he is a marker; mutates to tav, yod, or drops.
• III-Aleph: aleph quiesces silently; preceding vowel lengthens.
• Geminates: identical second and third letters often fuse with a dagesh.
• Doubly weak verbs stack the rules — diagnose each weakness separately.
• The top seven biblical verbs are all weak — these rules unlock most of the OT.