The
English suffixes -phobia, -phobic, -phobe (of
Greek origin: φόβος/φοβία ) occur in technical usage in
psychiatry to construct words that describe irrational, disabling
fear as a mental disorder (e.g.,
agoraphobia), in
chemistry to describe chemical aversions (e.g.,
hydrophobic), in
biology to describe organisms that dislike certain conditions (e.g.,
acidophobia), and in
medicine to describe hypersensitivity to a stimulus, usually sensory (e.g.,
photophobia). In common usage they also form words that describe dislike or hatred of a particular thing or subject. The suffix is
antonymic to
-phil-.
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