jeopardize - To subject somebody or something to the risk of loss, harm, danger or failure.

fester - For negative feelings to get worse because they are not being dealt with

Heresy - An opinion or belief that contradicts established norms or accepted standards.

pernicious - Having a harmful effect, especially in a gradual or subtle way.

Deluge - A severe flood or overwhelming rush of water.

Crack - To break or cause to break without complete separation of parts, often with a sharp sound.

precarious - Not safe and likely to fall or fail

Perish - To cease to exist or come to an end; disappear or be destroyed.

Malignant - Dangerous and harmful, tending to produce death or deterioration – often describing something destructive or uncontrollably harmful.

ominous - Giving the impression that something bad, unpleasant or threatening is going to happen.

noxious - Poisonous or very harmful.

hysteria - A state of extreme excitement, fear or anger in which a person, or a group of people, loses control of their emotions and starts to cry, laugh, etc.