visceral

visceral   [VIS-er-uh l]

adjective. intuitive, instinctive rather than rational; gut feeling

"Her hatred of mice may not be rational, but visceral."
"Many conservatives viscerally dislike Big Government, which they see as power-hungry, inept and corrupt."
"The visible and visceral experience of the fires is all around me."
"a visceral reaction"

http://www.vocabulary.com/dictionary/visceral