Korean adverbs are words that modify verbs, adjectives, or other adverbs, providing additional information about how, when, where, or to what extent an action occurs. They play a crucial role in sentence structure, helping to clarify the meaning and context of the action. Common examples include 빨리 (quickly), 천천히 (slowly), and 자주 (often). In the Korean language, adverbs can be formed from adjectives by adding specific endings or by using standalone words. They can also indicate frequency, manner, or degree, enhancing the richness of expression. Understanding adverbs is essential for effective communication in Korean.