Knock the props (out) from under (someone or something) phrase
To make something weaker or less effective; to demolish something.
The tsunami knocked the props out from under countless homes.
Another defeat would knock the props out from under the team’s morale.
To make someone lose confidence in themselves or their abilities.
Before the match, my opponent tried to knock the props out from under me.
Most leaders don't set out to be careless with the words they use, but comments knocking the props out from under employees can slip out without much forethought.
To put an end to something
1. Fall in a sequence
2. Be damaged, destroyed or defeated quickly and sequentially
If something "goes under the wrecking ball", it is destroyed or demolished.
To damage or try to damage something, typically refers to intangible things.
To destroy an argument, a rule, law, belief or plan; to make something ineffective
The verb "kncok" must be conjugated according to its tense.
The origin of this phrase is not clear.
A group of bad or sinful people
You'd better stay away from them. They are a nest of vipers.