This is not a documentary for the young to watch, or even for those adults who crumble easily.
The moment people realize we have a way out of this impasse, the Putin regime will crumble overnight.
Will sanctions already in effect continue to torpedo the Iranian economy, or will sanctions begin to crumble?
late 15c., kremelen, from Old English *crymelan, presumed frequentative of gecrymman "to break into crumbs," from cruma (see crumb). The -b- is 16c., probably on analogy of French-derived words like humble, where it belongs, or by influence of crumb. Related: Crumbled; crumbling.