the response of an organism or system to a stimulus

a feeling or emotion that arises in response to a situation

किसी स्थिति के प्रति उत्पन्न होने वाला एक एहसास या भावना

English Usage: Her reaction to the news was unexpected.

Hindi Usage: समाचार पर उसकी प्रतिक्रिया अप्रत्याशित थी।

to respond or behave in a particular way

to act in response to something

किसी चीज के प्रति प्रतिक्रिया करते हुए कार्य करना

English Usage: She reacted quickly to the emergency.

Hindi Usage: उसने आपातकाल पर जल्दी प्रतिक्रिया दी।