automatic reactions

noun
UK /ˌɔːtəˈmætɪk riˈækʃənz/
US /ˌɔːtəˈmætɪk riˈækʃənz/

Things your body does right away without you thinking about them.

Blinking when something flies near your eye is one of your automatic reactions.


OTHER MEANINGS

2. Quick responses you make without stopping to think.

His automatic reactions during the game made him a great goalkeeper.

3. Responses that happen on their own because of a machine or system.

The alarm's automatic reactions kept the building safe at night.

4. Feelings or actions you have before you can control them.

Her automatic reactions to loud noises showed how nervous she was.