katasztrofális

Causing very great harm, damage, loss, or failure, often on a large or serious scale.

Causing or involving sudden, very great damage, destruction, or suffering, often on a large scale.

Extremely bad, complete, or embarrassing in failure or quality, often used as strong exaggeration.

Causing or involving a serious disaster, with very severe harmful effects.

Extremely bad, harmful, or unsuccessful, especially in its results (often used for emphasis).

Causing extremely serious damage, destruction, or loss, often on a large scale.

Extremely bad, unsuccessful, or of very poor quality, often used for strong negative emphasis even when no real disaster occurs.