abysmal
Definitions
Extremely bad; appalling.
Immeasurably deep or great; bottomless.
Examples
The team's performance in the championship game was absolutely abysmal.
After the storm, the condition of the roads was truly abysmal.
He received an abysmal grade on his final exam because he failed to study.
Synonyms
terrible dreadful atrocious appalling awful execrable abject
Antonyms
excellent superb wonderful outstanding magnificent exceptional stellar