doplnní
Doplnní is a form that may appear in Czech texts, but in standard Czech the corresponding noun is usually doplnění or doplněk. Doplní is the verb form meaning “it adds” or “it supplements” from the verb doplnit. The noun doplnění refers to the act or result of completing something by adding missing elements, whereas doplněk denotes a supplement or addition that complements something else. The appearance of doplnní as a standalone noun is uncommon and often considered nonstandard or dialectal; in formal writing it is better to use doplnění or a context-appropriate synonym.
Etymology and spelling: both doplnění and doplněk derive from the verb doplnit, with the suffix -ení used
Usage and contexts: doplnění is widely used across domains. In administration and data handling, it refers to
See also: doplněk, dodatek, příloha, přídatné látky. Notes: while doplnní may appear in some texts, standard references