Tvrtek

Tvrtek is a non-diacritic form of čtvrtek, the Czech word for Thursday. The standard Czech spelling uses diacritics, but tvrtek may appear in texts where diacritics are stripped, in old documents, or in computer environments that do not support special characters.

Etymologically, čtvrtek is associated with the ordinal sense of the week, reflecting the fourth day of the week in traditional calendars. The non-diacritic variant tvrtek preserves this connection, even though the diacritic form is used in modern Czech orthography.

Beyond a linguistic variant, tvrtek may also appear as a surname in the Czech Republic and Slovakia. As a family name it is relatively uncommon and can be encountered in historical records or contemporary registries.

In everyday usage, tvrtek primarily arises in the context of text processing, database fields, or transliteration where diacritics are not available. It is not a distinct word with a separate meaning in standard Czech; rather, it is an orthographic variant of čtvrtek.

See also: čtvrtek (the standard Czech term for Thursday); the concept exists in related Slavic languages with diacritics in their standard forms, such as štvrtok (Slovak) or četvrtak (Croatian/Serbian/Bosnian), depending on language and orthography.