koumpounophobia
The fear of buttons (clothing fasteners).
uncountable
Mrs Rose said that from time to time psychiatrists had asked her whether their clients suffering from koumpounophobia, or fear of buttons, could visit the shop in Cleveland Street, Fitzrovia.
Where it comes from
Modern Greek κουμπί (koumpí) + -phobia. The anomalous first element may be from a related form such as κουμπώνω (koumpóno), a verb.
Adapted from the Wiktionary entry koumpounophobia (CC BY-SA 4.0).