one-trick-ponyism en · NOUN
Etymology
From one-trick pony + -ism.
Meanings
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(rare, uncountable) The state of being a one-trick pony.
Finally delivering “Room on Fire,” the follow-up to their much ballyhooed debut album, the well-heeled but stylishly bedraggled locals try to dispel accusations of one-trick-ponyism.
2003, The New Yorker, page 17: