bad is on the Basic English 850 List. back - bad - bag bad is one of the 1000 most common headwords. back - bad - bag Pronunciation IPA (key): /bæd/ (AU) IPA (key): /bæːd/ (NZ) IPA (key): /bɛd/; Homophone: bed Audio (US)(file) Audio (UK)(file) Adjective Positive bad Comparative worse Superlative worst If something is bad, it is not good.Synonym: ill The man who killed his wife was very bad. Skipping school is a bad thing to do. Debts can go bad when a debtor has gone bankrupt. Could things get any worse than this? This is the worst time I've had all year!Wikiwand - on Seamless Wikipedia browsing. On steroids.