terrible is one of the 1000 most common headwords. term - terrible - test Pronunciation IPA (key): /ˈtɛrəbl/ Audio (US)(file) Audio (UK)(file) Adjective Positive terrible Comparative more terrible Superlative most terrible If something is terrible, it's very bad. Synonyms: bad, serious and poor He said she was ugly. Wasn't that a terrible thing to say to anyone? If something is terrible, it causes people to feel terror or fear. The witch laid a terrible curse on him. Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads