substituis

Substituis is a verb form found in some Romance-language varieties, used as the second-person singular present indicative of a verb meaning to substitute or replace. In this usage, it functions as the simple present tense for the subject “you.” The form reflects the general Romance pattern of adding a personal ending to a verb stem to indicate person and number.

Etymology and cognates: Substituis derives from Latin substituere, meaning to substitute, place in place of. Over time, many Romance languages developed distinct present-tense endings for second-person singular, producing forms that resemble substituis in certain dialects and varieties. The exact spelling, pronunciation, and mood can vary across languages and regions, so substituis is most securely identified as a tense form in specific Romance varieties rather than a universal standard across all related languages.

Distribution and usage: The precise occurrence of substituis is most commonly associated with Occitan and some neighboring Romance varieties. In Occitan dialects, the form corresponds to the second-person singular present indicative, meaning “you substitute.” Other languages with related verb families may use different orthography and morphology for the same conceptual function, so substituis should be understood in its regional linguistic context rather than as a widely standardized form.

See also: Substitution, Substituir (for related verb forms in other Romance languages), Romance languages, Occitan language.

Note: Because Romance conjugation patterns vary by dialect and country, substitutes of the same verb may appear with different endings or diacritics in related languages.