Adverb definition with examples. Adverb is a part of speech that gives more information about an action: how, where, when, to what extent it happened. Learn what Adverbs are in English grammar with definitions, types, rules, list, and examples to help you master competitive exams and everyday writing. Adverbs are words that modify verbs, adjectives, other adverbs, or sentences, providing additional information about how, where, when, to what extent, or how often something happens. Learn what adverbs are and how they modify verbs, adjectives, and other adverbs in English grammar. Explore the different types of adverbs with examples and practice questions on adverbs.