Arachibutyrophobe

Arachibutyrophobe (pronounced a-ra-chi-bu-tyr-o-pho-be)

One who suffers from the fear of peanut butter sticking to the roof of one's mouth.

1977: A compound word, the construct from the Latin arachis (peanut) + butyrum (butter) +‎ -phobe (fear of).  The –phobe suffix is a combining form used to form personal nouns corresponding to nouns.  It’s from the French phobe, from the Latin –phobus (fear; panic), from the Attic Greek -φόβος (-phóbos), combining form of φόβος (phóbos), ablaut variant of φέβεσθαι (phébesthai), middle infinitive of φέβομαι (phébomai), from the primitive Indo-European bhegw.  Cognates include the Slovak bežať (run), the Polish biec (run), the Lithuanian bėgti (run), the Albanian dëboj (throw out, drive away, expel, banish).  The related German form is -phob.

The –phobe suffix can cause confusion.  It’s because it can mean, depending on context, either “fear of” or “hatred of” and is often used in a political context; an Anglophobe being one with a dislike of the English while an Anglophile is an admirer.  The –phile suffix is from the Latin -phila, from Ancient Greek φίλος (phílos) (dear, beloved).

Phobias

Phobias need not be widely diagnosed conditions; they need only be specific and, even if suffered by just one soul in the world, the criteria are fulfilled.  In this sense, phobias are analogous with syndromes.  A phobia is an anxiety disorder, an unreasonable or irrational fear related to exposure to certain objects or situations.  The phobia may be triggered either by the cause or an anticipation of the specific object or situation.

The fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5 (2013)) made some interesting definitional changes from the earlier DSM-4 (1994).  (1) A patient no longer needs to acknowledge their anxiety is excessive or unreasonable in order to receive a diagnoses, it being required only that their anxiety must be “out of proportion” to the actual threat or danger (in its socio-cultural context).  (2) Symptoms must now, regardless of age, last at least six months.  (3) The diagnostic criteria for social phobias no longer specify that age at onset must be before eighteen, a change apparently necessitated by the substantial increase in reporting by older adults with the DSM editors noting the six-month duration threshold exists to minimize the over-diagnosis of transient fears.

Lindsay Lohan in The Parent Trap (1998) introduced the culinary novelty of peanut butter spread on Oreos; an allure appalled arachibutyrophobes avoid.