alkuperämuoto

Alkuperämuoto, or original form, is a term used in linguistics and philology to denote the form of a word that serves as the canonical reference point for analysis. In many contexts it corresponds to the lemma or dictionary form—the headword from which other inflected or derived forms are generated. This usage helps researchers anchor morphologic paradigms and cross-language comparisons.

The precise sense of alkunperämuoto can vary by field. In contemporary grammar, the original form is usually the base or citation form used for labeling entries. In historical and comparative linguistics, it may refer to a reconstructed proto-form that linguists posit for a word in a parent language, such as a Proto-Indo-European form, rather than an attested surface form.

Examples illustrate the distinction. For English, the original form of the verb be is be, with inflected forms such as am, is, and are derived from it. In a cross-linguistic dictionary, an infinitive like cantar in Spanish might be treated as the original form from which cantas and cantaba are derived. In Finnish linguistic descriptions, the term is sometimes used to indicate the underlying form before inflection, though perusmuoto (the basic form) is more common in everyday grammar.

Related concepts include lemma, headword, base form, stem, and proto-form. The notion of alkunperämuoto helps formalize how words are analyzed, compared, and reconstructed across languages and historical stages.