Definition
A gerund is a verb form ending in "-ing" that functions as a noun. It can act as a subject, object, or complement in a sentence. For example, in the sentence "*Swimming* is my favorite sport," "swimming" is a gerund acting as the subject. Gerunds combine the characteristics of verbs and nouns. They can take objects and be modified by adverbs, but they function grammatically as nouns. Think of a gerund as a verb wearing a noun costume! It's a versatile grammatical form.