Subterraneanity

General social movements, such as those for mental health, peace, or Women’s Liberation, seek to bring about changes in people’s values, both of their members and the public at large. Such movements are often marked by an absence of (1) established leadership, (2) a recognized membership, and (3) clear structural forms for guidance and control. Informality, inconspicuousness, and subterraneanity prevail.

Source: wiktionary

to write is to resurface the traumatic subterraneanity of mind.

Source: wiktionary

[Steve] Chimombo’s poetry is characterised by the practice of geological subterraneanity, a conception of poetic political agency as a constant movement between the terrestrial world of dominant political discourse and the multiple locations provided by the labyrinthine space of pre-colonial myth.

Source: wiktionary

For example, in / Encyclopedias are gold mines / [David] Rumelhart suggests that the process of comprehension involves applying the schema suggested by the predicate term to the subject term (the term predication itself, as standardly used, implies that characteristic properties of the predicate concept are to be applied to the subject concept). In the present example, there is only a partial fit of those characteristic properties (e.g., “containing hidden riches” fits encyclopedias, “subterraneanity” does not); indeed, such “unevenness of fit” is a key ingredient of metaphoricality, Rumelhart suggests: […]

Source: wiktionary