"Morbid fear" refers to an intense, unhealthy, and often irrational fear or anxiety about something. It describes a deep-seated worry that is excessive and abnormal. Full definition
And the very next week an editorial titled «Two Years of Mr. Hoover,» while finding the president to be a man of conscience and courage, nonetheless took him to task for his «almost naïve confidence» in private and competitive enterprise and his «morbid fear of socialism.» (religion-online.org)
He wants free agents serving him and choosing to through accurate knowledge of him and a fear of displeasing him out of love not a morbid fear of burning. (religion.blogs.cnn.com)
He was driven not so much by ambition but more a morbid fear of the poverty he had experienced in his childhood. (herald.ie)