Simple Definition:

A gerund is a noun built from a verb. It is created by adding “-ing” to the base form of a verb.

For example:

• “Swimming” is a gerund in the sentence “I enjoy swimming.” (Swimming is the activity being enjoyed.)
• “Running” is a gerund in the sentence “Her favorite hobby is running.” (Running is the hobby.)

Very Simple Definition:

A gerund is a noun that is made from a verb and ends with “-ing.”

For example:

• Swimming is fun. (Swimming is a gerund.)
• Eating is necessary for survival. (Eating is a gerund.)