What is another word for most brick-wall?
Pronunciation: [mˈə͡ʊst bɹˈɪkwˈɔːl] (IPA) 
The term most brick-wall can be interpreted as a phrase that signifies an obstacle or hurdle that is difficult to overcome. Synonyms for this phrase include the words insurmountable, impenetrable, impregnable, and formidable. Each of these words suggests a challenge that is difficult or impossible to surmount. Insurmountable implies an obstacle that cannot be overcome despite one's best efforts. Impenetrable suggests a barrier that cannot be breached. Impregnable suggests a fortification that is invincible or unassailable. Finally, formidable implies an obstacle that is awe-inspiring or intimidating in its magnitude. All of these synonyms are helpful in describing a situation or challenge that seems impossible to overcome.
