Breakdown of Det var det mest typiska misstaget.
vara
to be
det
the (with ett-words)
misstaget
the mistake (blunder)
mest
most
Questions & Answers about Det var det mest typiska misstaget.
Why do we use mest typiska instead of typiskaste?
Adjectives that end in -isk (like typisk, magisk, or komisk) don't take the usual -are and -aste endings. Instead, you must use mer (more) and mest (most) before the adjective, which is very similar to how longer adjectives work in English.
Why does typiska end in an -a here?
Because it is part of a definite noun phrase. Even though we use mest to make it a superlative, the adjective itself still needs its definite -a ending because it comes after the definite article det.
Why is there a det before the adjective and an -et at the end of misstaget?
This is the classic Swedish double definiteness rule. When a noun has an adjective attached to it, you need a freestanding definite article before the adjective (det) and the definite suffix attached to the noun itself (misstaget).
Does the first Det in the sentence mean "It" or "That"?
It can mean either, depending on the context. Det is a versatile pronoun used to point something out. Here, "That was the most typical mistake" or "It was the most typical mistake" are both perfectly fine translations.