Why Hebrew Girls Are בנות and Not בתות: The Mystery of Hebrew Plurals

Have you ever heard a Hebrew-speaking toddler proudly refer to girls as בַּתּוֹת? While this cute linguistic mix-up might make you smile, it actually points to a fascinating linguistic mystery: if the plural of בֵּן is בָּנִים, why on earth is the plural of בַּת not בַּתּוֹת, but בָּנוֹת?

The words בֵּן and בַּת are foundational pillars of Hebrew and the Semitic language family. Along with other family terms like father, mother, and brother, they belong to an ancient, exclusive club of words shared across almost all Semitic tongues. Their extreme antiquity makes them incredibly durable, but also notoriously tricky for linguists to decode.

Take the word בֵּן, which transforms into the plural בָּנִים. Unlike normal words where you just slap on a suffix—like עֵד becoming עֵדים or שֵׁם becoming שֵׁמות—the plural בָּנִים does not actually stem directly from the singular form בֵּן (1). We see this bizarre behavior in other ultra-basic words too, like יוֹם becoming יָמִים, בַּיִת becoming בָּתִּים, and עִיר becoming עָרִים.

The secret behind בַּת is that it actually started out as בֵּן. To make it feminine, ancient speakers tacked on the Hebrew letter ת, which originally should have spelled out "בנת" (exactly like the Arabic word for girl, בִּנְת). But Hebrew has a habit of swallowing silent נ letters when they sit right before another consonant. Just like "מנְפל" became מַפָּל, "ינְסע" became יִסַּע, and "ינְשמר" became יִשָּׁמֵר, the word "בנת" collapsed into בַּת (2).

When we look at the plural form בָּנוֹת, that long-lost נ suddenly resurfaces (3), while the feminine ת vanishes. This is standard Hebrew grammar for feminine nouns ending in ת. For example, the plurals of הולכת, טבעת, and כותונת are הולכות, טבעות, and כותונות (never "הולכתות", "טבעתות", or "כותנותות") (4). That is how we end up with the matching pair בָּנִים and בָּנוֹת, just like זַמָּרִים and זַמָּרוֹת.

Toddlers who say בַּתּוֹת are actually using highly logical, built-in grammar rules. They take the singular word בַּת and simply add the standard plural ending וֹת. It is the exact same instinct that leads kids to say "טעותים" instead of טעויות, or "אחותות" instead of אחיות.

Notes:

(1) Some linguists believe the singular and plural forms are based on different root structures. The singular בֵּן evolved from the form "bin" (or the consonant cluster "bn", similar to the Arabic אִבְּן), while the plural בָּנִים evolved from the base "ban".

(2) This is why the ת has a dagesh (emphasis dot) when we conjugate it: בִּתִּי, בִּתּוֹ, and so on. Why do we say בַּת instead of "בִּת", which would match the Arabic and the conjugated Hebrew forms? Linguists attribute this to Philippi's Law, a sound shift where a short "i" sound turned into a short "a" under specific conditions, though other theories exist.

(3) Based on the theory in Note 1, the plural בָּנוֹת evolved directly from the same base used for the plural בָּנִים.

(4) In a few rare cases, the feminine ת does stick around in the plural form, such as עִתִּים/עִתּוֹת (plurals of עת) and אֲמִתּוֹת (plural of אמת, from which the singular אֲמִתָּה was later derived).