Dutch superlatives express the highest or lowest degree of a quality. For most adjectives, add -st to the base form: groot → grootst (biggest), snel → snelst (fastest), mooi → mooist (most beautiful). When used predicatively, the superlative takes the form het + adjective + -st: “Dit huis is het grootst” (This house is the biggest). When used attributively, it adds -e: “het grootste huis” (the biggest house).
Irregular superlatives mirror the irregular comparatives: goed → best, graag → liefst, veel → meest, weinig → minst. The superlative of veel — meest — is also used for long adjectives that cannot easily take -st: het meest interessante boek (the most interesting book). This meest construction works like English “most” and is productive for any adjective where -st would sound awkward.
Common patterns to practice: “de beste student in de klas” (the best student in the class), “het langste rivier in Nederland” (the longest river in the Netherlands), “de meest bezochte stad” (the most visited city). The superlative is used in fixed expressions too: “ten minste” (at least), “op zijn best” (at best), “zo snel mogelijk” (as fast as possible — a superlative-like construction using mogelijk).