sedert
Sedert is a Dutch word used as a preposition and adverb meaning “since” or “from that time.” It marks the starting point of a time period that continues to the present or to another reference point. In modern spoken Dutch, since is more common in everyday language, while sedert is often found in formal, written, or older styles and in certain fixed expressions.
Usage notes: Sedert introduces a time point or interval and is typically followed by a date, year,
Etymology and variants: The word originates in Middle Dutch and remains in use in Afrikaans as sedert.
See also: sinds, vanaf, temporal prepositions in Dutch.
In summary, sedert is a formal Dutch temporal preposition meaning “since,” used to indicate the starting point