IPA: /ˈtɛrɪbəl/
KK: /ˈtɛrɪbəl/
Causing a lot of fear, alarm, or discomfort; very bad or unpleasant.
The movie was so terrible that I couldn't finish watching it.
Comparative: more terrible
Superlative: most terrible
Terrible → It is formed from "terrere" (meaning to frighten) and the suffix "-ible" (meaning capable of). The word "terrible" describes something that is capable of causing fear or dread.
Think of something that can 'frighten' ('terrere') you — that's why 'terrible' means something that causes fear.