tygodniu

Tygodniu is the locative singular form of the Polish noun tydzień, meaning a week—a seven-day period used in calendars and everyday timekeeping. In Polish, the week is a standard unit of time that can be referred to in both everyday speech and formal contexts.

In usage, tygodniu appears after prepositions that govern the locative case, most commonly w (in) and o (about). For example, W tym tygodniu mam dużo pracy (This week I have a lot of work). The form is also found in phrases such as o tym tygodniu (about this week). The locative form contrasts with other cases used in related expressions, such as the genitive tygodnia in phrases like po tygodniu (after a week).

Morphology and declension: tydzień is declined as a masculine noun. Singular forms include: nominative tydzień, genitive tygodnia, dative tygodniowi, accusative tydzień, instrumental tygodniem, locative tygodniu. The plural forms are tygodnie (nominative), tygodni (genitive), tygodniom (dative), tygodnie (accusative), tygodniami (instrumental), tygodniach (locative). The locative singular tygodniu is the form used after w/o phrases referencing time.

Relation to related terms: the adjective tygodniowy means weekly, and the adverbial form tygodniowo conveys a weekly basis. The word tydzień and its forms are central to Polish time expressions, calendars, and scheduling, and they interact with other temporal words to specify weeks in a month or year, weeks in a sequence, or repeated weekly events.

Etymology and history: tydzień and its related forms come from long-standing Polish roots connected with other Slavic languages, reflecting the concept of a seven-day cycle and its role in timekeeping across the region.