Prefixatie

Prefixatie, also called prefixation, is the linguistic process by which a prefix is attached to the beginning of a base word (a stem or root) to form a new word or to modify its meaning or grammatical category. This makes it a central mechanism of word formation alongside suffixation and infixation. Prefixes are bound morphemes that do not stand alone and are typically productive in many languages, allowing speakers to create new words or modify existing ones without changing the root's core meaning.

Prefixes can perform different functions. Derivational prefixes create new words and often shift the word's part of speech or semantic field, while others convey negation, repetition, intensification, or aspectual or directional nuance. Common English prefixes include un-, re-, in-, and dis-, which respectively signal negation, reiteration or return, inclusion or inward direction, and separation. In Dutch, prefixes such as on-, ver-, ont-, and be- are frequently used and can alter meaning in ways similar to English.

Productivity varies by language and prefix; some are highly productive and widely used to coin new vocabulary, while others are limited to a fixed set of words. Prefixation interacts with phonology and orthography; in some cases the base word undergoes sound or spelling adjustments for ease of pronunciation.

See also: affix, derivational morphology, morpheme, word formation.