כֵּן (ken) — yes; so/thus; honest; stand; louse
Etymology
The spelling כֵּן represents not one but five distinct Hebrew words with separate etymological lineages, all of which remain in use today in various registers.
The most frequent כֵּן in the Bible — over 500 occurrences — is an adverb meaning "so, thus, in this way," functioning similarly to the modern English "thus." It shares its ancient Semitic root with the adverb כַּךְ ("this way"). Biblical examples include Laban's reply to Jacob: "It is not done so in our place, to give the younger before the firstborn" (Genesis 29:26). This כֵּן survives in numerous fixed phrases still in active use: לָכֵן ("therefore," biblical), עַל כֵּן ("therefore," biblical), אִם כֵּן ("if so"), שֶׁכֵּן (Rabbinic), גַּם כֵּן ("also," medieval), and וְכֵן הָלְאָה ("and so on," modern).
The second כֵּן is an adjective meaning "honest, upright, correct," derived from the root כ-ו-נ (also the source of נָכוֹן "correct," לְכַוֵּן "to aim/direct"). God uses it when telling Moses "the daughters of Zelophehad are right/correct in what they say" (Numbers 27:7). In modern Hebrew it describes a person who is frank and straightforward; the colloquial singular form כֵּנֶה is widely heard, though the standard form remains כֵּן.
The third כֵּן is a noun meaning "stand, base," derived from root כ-נ-נ (related to Akkadian kannu, "base"). Isaiah uses it when describing the mast of a ship losing its stand (33:23). Modern Hebrew uses this word as כַּן ("easel," "stand"), pronounced with a different vowel pattern than its biblical form.
The fourth כֵּן is a rare noun meaning "position, role, place," from root כ-ו-נ (related to Arabic makān, "place"). It appears in Joseph's story when he tells Pharaoh's cupbearer: "In three days Pharaoh will restore you to your position" (Genesis 40:13), giving rise to the idiom הֵשִׁיב עַל כַּנּוֹ ("restored to the previous state"), and in Daniel 11:20, giving rise to עָמַד עַל כַּנּוֹ ("remained standing, did not collapse").
The fifth כֵּן is a noun meaning "louse," appearing almost always in its plural כִּנִּים — one of the ten plagues of Egypt. The masculine singular appears once in Isaiah 51:6, where he compares the inhabitants of the earth dying to a louse dying, but ancient translators misread the passage and interpreted כְּמוֹ כֵן as "likewise" rather than "like a louse." This misreading gave birth to the common phrase כְּמוֹ כֵן ("likewise, also"), in widespread use from late antiquity onward.
The affirmative "yes" sense — the most common use today — is the newest layer. Biblical Hebrew had no dedicated affirmative particle; instead, speakers echoed the verb of the question. The Aramaic equivalent הֵן was borrowed into Hebrew and used occasionally as an affirmative in Rabbinic literature. The earliest clear attestation of כֵּן meaning "yes" comes from Maimonides' Mishneh Torah (Egypt, c. 1180). Attestations multiply only from the mid-19th century onward, and the word became the standard affirmative with the consolidation of spoken Modern Hebrew in the early 20th century.
Key Quotes
"כֵּן בְּנוֹת צְלׇפְחָד דֹּבְרֹת" — God to Moses, Numbers 27:7 (כֵּן meaning "correct, right")
"לֹא יֵעָשֶׂה כֵן בִּמְקוֹמֵנוּ לָתֵת הַצְּעִירָה לִפְנֵי הַבְּכִירָה" — Laban to Jacob, Genesis 29:26 (כֵּן meaning "thus, so")
"כֵּן פרעת ונתתי לך מה שפרעת" — Maimonides, Mishneh Torah, Laws of Loans 26:8, c. 1180 (earliest attestation of כֵּן meaning "yes")
Timeline
- Biblical period: Four distinct כֵּן words in active use (adverb, adjective, nouns)
- Late antiquity: Misreading of Isaiah 51:6 creates the phrase כְּמוֹ כֵן ("likewise")
- Rabbinic period: Aramaic הֵן used as affirmative; occasionally כֵּן in same role
- c. 1180: Maimonides attests כֵּן as affirmative "yes" in Mishneh Torah
- Mid-19th century: Affirmative כֵּן becomes more common in print
- Early 20th century: כֵּן established as standard Hebrew for "yes"
Related Words
- כַּך — so, this way (cognate adverb)
- נָכוֹן — correct (same root כ-ו-נ)
- לְכַוֵּן — to aim, to direct (same root כ-ו-נ)
- כִּנָּה — louse (Rabbinic feminine singular of biblical כֵּן)
- הֵן — yes (Aramaic affirmative, also used in Rabbinic Hebrew)
- לָכֵן / עַל כֵּן — therefore (fixed phrases from adverbial כֵּן)