instinctively
US /ɪnˈstɪŋk.tɪv.li/
UK /ɪnˈstɪŋk.tɪv.li/

1.
by instinct; without conscious thought
:
•
She instinctively reached out to catch the falling vase.
•
He knew instinctively that something was wrong.
by instinct; without conscious thought