Learn Swedish: Väktaren registrerade intrånget, varefter han ringde polisen. - The security guard registered the intrusion, after which he called the police.

Varefter literally translates to "after which" (a combination of var meaning "where/which" and efter meaning "after"). It connects the two clauses into a single fluid, formal sentence. While you could stop the first sentence and start a new one with sedan or efter det (e.g., "...intrånget. Efter det ringde han..."), varefter is perfect for formal or official contexts, like a police or security report.

Does varefter trigger inverted word order (verb first) in the clause that follows it?

No, it does not. Words like varefter, varpå, and varigenom act as relative adverbs that introduce a subordinate relative clause. Therefore, you must use standard subordinate word order, which means the subject (han) comes immediately before the verb (ringde).

How is the noun intrånget constructed?

Intrånget (the intrusion) is the definite form of ett intrång. It is derived from the particle verb att tränga in (to force one's way in). The root trång usually means "tight" or "narrow" in Swedish, so the noun literally evokes the idea of squeezing or forcing oneself into a restricted or uninvited space.

What is the difference between väktaren and ?