ad. By reflex, automatically, without conscious thought.
The Century Dictionary and Cyclopedia
In a reflexive manner; in a direction backward: as, to meditate reflexively upon one's course.
In grammar, after the manner of a reflexive verb.
Reflectingly; slightingly; with censure.
Word Usage
"First, 97% of voting Black Americans voted for Obama, and from everything I see out there politically, a hefty 90% of them remain reflexively supportive of him, no matter what."