Dutch has a rich vocabulary of degree adverbs that modify adjectives and other adverbs. The most common: heel (very, in informal speech), erg (very, with a slight negative connotation originally but now neutral), echt (really, genuinely), behoorlijk (quite, considerably), nogal (rather, somewhat — often with mild negative implication), vrij (fairly, pretty), tamelijk (fairly, moderately), zo (so), te (too — excessively). Each has a specific register and nuance.
Heel is the most frequently used intensifier in spoken Dutch: “heel goed, heel leuk, heel interessant.” In formal writing, zeer replaces heel for “very”: “zeer belangrijk” (very important). Erg is slightly more emphatic: “Ik vind het erg moeilijk” (I find it very difficult). Echt adds the sense of “genuinely” or “truly”: “Dat is echt mooi” (That is truly beautiful). Nogal softens or qualifies: “Het was nogal saai” (It was rather boring).
Minimizers reduce the force of an adjective: een beetje (a little), enigszins (somewhat), lichtjes (slightly), nauwelijks (barely, scarcely). These appear constantly in polite understatement — a very Dutch speech habit. “Het is een beetje koud” might mean it is actually quite cold. Understanding degree adverbs lets you calibrate meaning precisely and interpret the subtle gradations in Dutch expression.