stem

grammar

Also known as: root

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July 14, 2026

Quick Summary

In linguistics, a stem is the most basic form of a word from which other words can be derived. It is a fundamental component in word formation, particularly in languages like those in the Afro-Asiatic phylum, especially Semitic languages.1

In Semitic languages, the stem is often built upon a root, which is a sequence of consonants that carries the general meaning. Vowels and other modifications are added to this root to create different forms of the word, indicating grammatical information like tense or part of speech. For example, in Arabic, the root k-t-b- can form stems like katab- (past tense, active) or kutib- (past tense, passive).12

The term "stem" can also refer to the base form of a word in other contexts, such as in English, where grammatical information is often added through prefixes or suffixes to a stem (e.g., wash- + -ed = washed). Additionally, "stem" can be used as a verb, meaning to remove a stem from something, to originate from, or to stop or check something, like a flow of blood.134

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Greek language
Morphology
…or verbal form combines a stem that carries the lexical sense of the word and a certain number of grammatical markers that serve to specify the meaning of the whole word (e.g., plural, future) or to indicate its syntactic function (e.g., subject, object) in the sentence.
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…or verbal form combines a stem that carries the lexical sense of the word and a certain number of grammatical markers that serve to specify the meaning of the whole word (e.g., plural, future) or to indicate its syntactic function (e.g., subject, object) in the sentence.
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root and pattern system
The root is a set of consonants arranged in a specific sequence; it identifies the general realm of the word’s meaning. Additional information, such as part of speech and tense, is reflected in the stem’s vocalic (vowel) and syllabic features, called the pattern.
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The root is a set of consonants arranged in a specific sequence; it identifies the general realm of the word’s meaning. Additional information, such as part of speech and tense, is reflected in the stem’s vocalic (vowel) and syllabic features, called the pattern.
Read More

Semitic languages
The stem: root and pattern analysis
The stem-formation processes of the Semitic languages have long been described in terms of a “root” interwoven with a “pattern.” The root (indicated here with the symbol Square root of√) is a set of consonants arranged in a specific sequence; it identifies…
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The stem-formation processes of the Semitic languages have long been described in terms of a “root” interwoven with a “pattern.” The root (indicated here with the symbol Square root of√) is a set of consonants arranged in a specific sequence; it identifies…
Read More