Meaning & Definition of Modify in English

1. Make less severe or harsh or extreme

• "Please modify this letter to make it more polite"

• "He modified his views on same-gender marriage"

2. Add a modifier to a constituent

3. Cause to change

• Make different

• Cause a transformation

• "The advent of the automobile may have altered the growth pattern of the city"

• "The discussion has changed my thinking about the issue"