indivisible part of word that does not have any affix, may have a meaning and be usable alone or not, and may comprise multiple "radical" forms
A root is the core part of a word that remains after you remove any prefixes or suffixes, and it may or may not be able to stand alone as a complete word. Roots matter because they're the fundamental building blocks that help us understand word meanings and how languages are constructed.
AI-generated from the Wikipedia summary — may contain errors.
A root (also known as a root word or radical) is the core of a word that is irreducible into more meaningful elements. In morphology, a root is a morphologically simple unit which can be left bare or to which a prefix or a suffix can attach. The root word is the primary lexical unit of a word, and of a word family (this root is then called the base word), which carries aspects of semantic content and cannot be reduced into smaller constituents. Content words in nearly all languages contain, and may consist only of, root morphemes. However, sometimes the term "root" is also used to describe the word without its inflectional endings, but with its lexical endings in place. For example, chatters has the inflectional root or lemma chatter, but the lexical root chat. Inflectional roots are often called stems. A root, or a root morpheme, in the stricter sense, is a mono-morphemic stem.
The traditional definition allows roots to be either free morphemes or bound morphemes. Root morphemes are the building blocks for affixation and compounds. However, in polysynthetic languages with very high levels of inflectional morphology, the term "root" is generally synonymous with "free morpheme". Many languages have a very restricted number of morphemes that can stand alone as a word: Yup'ik, for instance, has no more than two thousand.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).