When something is shockingly bad, it is so much worse than you expected. When you are shocked, you are not able to react in a normal way.
To underpin something is to support it with something else. When you underpin a building, you are providing the foundation for it.
Disinformation is fake information that is designed to harm or confuse someone. Disinformation can be spread by governments, political parties, or other organizations.
An escalator is a type of moving staircase. It uses a moving belt to move people up or down, and it usually has a stop at the top or the bottom.
unrelenting means stubborn and determined, even when the situation is difficult or unpleasant. The fighter was unrelenting in her pursuit of the enemy.
To revitalize something is to make it new and exciting again. Sometimes this means restoring its former glory, or making it into something that is new and different.