neljapäeval

Neljapäeval is the Estonian adessive singular form of the noun neljapäev (Thursday). It is used to indicate the time when an action occurs, and is equivalent to the English expression “on Thursday.” The form appears in sentences to specify a single Thursday, such as in schedules or events.

Morphology and usage fall under the standard Estonian time expressions: neljapäeval denotes a specific day, while neljapäevadel expresses a habitual or recurring timing, meaning “on Thursdays.” The base noun neljapäev is derived from the ordinal concept of the day as the fourth day of the week, reflecting traditional counting of weekdays starting with esmaspäev (Monday). The genitive form neljapäeva is used for possession or “of Thursday.”

Common constructions include:

- Kohtumeneljapäeval kell kaheksa. (We will meet on Thursday at eight.)

- Ta läks neljapäeval tööle. (He went to work on Thursday.)

- Nad reisivad neljapäevadel. (They travel on Thursdays.)

Notes on style and scope:

In normal prose, days of the week are lowercase in Estonian, so neljapäeval is written without capitalization unless it starts a sentence. For ongoing schedules or routines, neljapäevadel is the typical form to convey repetition every Thursday. The term is widely understood in Estonian-speaking contexts and is part of standard temporal expression without requiring additional prepositions.