Very serious (informal) (7)
I believe the answer is:
chronic
(Other definitions for chronic that I've seen before include "Awful" , "(Of a problem) long-lasting" , "(Of illness) deep-seated" , "Very serious" , "Not acute" .)
I believe the answer is:
chronic
(Other definitions for chronic that I've seen before include "Awful" , "(Of a problem) long-lasting" , "(Of illness) deep-seated" , "Very serious" , "Not acute" .)