When you automatically nod or say yes to agree to
whatever the other
person is saying, not necessarily because you agree with this
person, but because you're not paying attention. Combo of "agree" and "reflex."
"When Megan started to tell me about the
benefits of the
vegan lifestyle, my agreeflex kicked in and I went to my happy place. She never even realized I didn'
t hear a word of it."