Desmoronar
Desmoronar is a verb used in Spanish and Portuguese with the core meanings of to crumble, to collapse, or to fall apart. It can describe a physical process as well as a figurative breakdown. The verb can be used transitively (desmoronar algo) or in its reflexive form (desmoronarse in Spanish, desmoronar-se in Portuguese), when the subject experiences the collapse.
In geological, construction, and civil contexts, desmoronar refers to the sudden failure of earth, rock, or structures,
Metaphorically, desmoronar is used to describe the breakdown of plans, confidence, institutions, or other non-physical things.
Adjectival and participial forms describe the resulting state: desmoronado refers to something that has collapsed or
See also: related terms such as colapsar (to collapse), desintegrar (to disintegrate), and desmoronamiento/desmoronamento as nouns