Englishabysmal
adjective
1 informal some of the teaching was abysmal:
very bad, dreadful, awful, terrible, frightful, atrocious, disgraceful, deplorable, shameful, woeful, hopeless, lamentable, laughable, substandard, poor, inadequate, inferior, unsatisfactory;
informal rotten, appalling, crummy, pathetic, pitiful, useless, lousy, shocking, dire, the pits;
British, informal duff, chronic, a load of pants, pants, poxy;
North American, vulgar slang chickenshit.
▷antonyms superb.