abysmal

The latter [geology] gives one the same sort of bewildering view of the abysmal extent of Time that Astronomy does of Space. [First attested in the early 19ᵗʰ century.]

Robben curled an effort against the foot of the post from the edge of the box after being gifted the ball by an abysmal clearance from keeper Stephan Andersen.

His stupidity is abysmal.

His understanding of logic is abysmal.

Tom speaks excellent Russian, but his German is abysmal.

Visibility was abysmal.