Binyan Pa’al/Qal Infinitive

The infinitive in Pa’al expresses the basic, active meaning of a verb – like “to write,” “to eat,” or “to go.” It’s the form you’ll find in dictionaries and use in phrases like “I want to ___” or “He began to ___.”

General Structure

  • Prefix: לְ (le–) meaning “to”
  • Form: Typically follows the pattern לִפְעֹל or לִקטֹל, depending on the root vowels
  • No doubling of root letters (unlike Pi’el or Hitpa’el)
  • Vowel patterns vary based on the root’s phonetic structure

Categories of Infinitive Forms

1. Regular Roots

These follow predictable patterns like לִשְׁמוֹר (“to guard”) or לִכְתוֹב (“to write”).

Examples:

  • לִשְׁמוֹר – to guard (ש־מ־ר)
  • לִפְתוֹחַ – to open (פ־ת־ח)
  • לִלְמוֹד – to learn (ל־מ־ד)

2. Roots Beginning with Alef (א)

Roots that begin with א often shift the vowel pattern to לֶאֱטֹל due to the guttural nature of Alef.

Examples:

  • לֶאֱכוֹל – to eat (א־כ־ל)
  • לֶאֱהוֹב – to love (א־ה־ב)
  • לֶאֱסֹף – to gather (אָסַף)

3. Roots with Guttural Letters (ע, ח, ה)

Guttural letters (especially ע and ח) affect the vowel structure, often requiring mobile sheva or composite vowels.

Examples:

  • לַעֲבוֹד – to work (ע־ב־ד)
  • לַחֲשׁוֹב – to think (ח־ש־ב)
  • לַהֲרוֹג – to kill (ה־ר־ג)

4. ❗ Irregular Infinitives

Some verbs have historically irregular infinitive forms that don’t follow standard patterns and must be memorized.

Root    Meaning Infinitive
י־ד־ע   to know          לָדַעַת
ל־ק־ח   to take         לָקַחַת
י־ש־ב   to sit         לָשֶׁבֶת
ה־ל־ך   to go         לָלֶכֶת
נ־ת־ן   to give          לָתֵת
א־מ־ר   to say     לֵאמֹר (Biblical), לוֹמַר (Modern Hebrew)

Note: The infinitive לוֹמַר is preferred in Modern Hebrew, while לֵאמֹר appears in Biblical texts.