theoreticalism en · NOUN
Etymology
From theoretical + -ism.
Meanings
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(uncountable) An approach based on theory, paying little or no attention to real-world concerns.
In some cases it even leads to a certain insensitivity, for instance when the professional approaches problems with the detached theoreticalism acquired in school rather than with concerned pragmatism.
1973, Bulletin of the Menninger Clinic, page 169: