In Croatian grammar, adverbs play an important role in providing more information about verbs, adjectives, and other adverbs. They help to describe how, when, where, or in what manner an action is performed.

Adverbs in Croatian can be divided into several categories based on their function. There are adverbs of time (kada? – when?), which answer questions about when an action takes place, for example, danas (today), jučer (yesterday), or sutra (tomorrow). Adverbs of place (gdje? – where?) indicate the location of an action, such as ovdje (here), tamo (there), or gore (up). Adverbs of manner (kako? – how?) describe the way an action is performed, like brzo (quickly), polako (slowly), or pažljivo (carefully).

Adverbs in Croatian also have different forms for comparison, just like adjectives. Some of them have comparative and superlative forms, such as više (more) and najviše (most), while others are irregular, like dobro (well), bolje (better), and najbolje (best).

It is important to understand the function and placement of adverbs in Croatian sentences to ensure clear and precise communication.