Is ''phobia'' a prefix or a suffix?

Answer 1

Excellent question, but, more social or sociological than grammatical. Poor education has led to reluctance to use correct English construction. Social terror and fear of error drives the poorly educated away from correct use of both verb tense and noun agreement. Thus; "We both walked down the street, then turned the corner" easily drifts into; "Me 'n him walk downa street 'n turna corner" If the lowest common denominator becomes intelligible enough, the use of correctly structured suffixes becomes actually dangerous, thus, suffix phobia ensues.

Answer 2

acrophobia, claustrophobia, etc. There are entire websites dedicated to the question.

Answer 3

"Phobia" is a suffix. It is typically added to the end of a word to indicate a fear or aversion to something specific.

Answer 4

Suffix