CHRONIC
adjective. 1 (esp of an illness) long-lasting. 2 having a chronic complaint. 3 colloq. Very bad; intense, severe. 4 colloq. Habitual, inveterate (a chronic liar). ? chronically adverb. [greek khronos time] usage the use of chronic in sense 3 is very informal, and its use in sense 4 is considered incorrect by some people.