Causing great anxiety (4,6)
I believe the answer is:
nail biting
(Other definitions for nail biting that I've seen before include "anxious" , "tense" , "anxiety" , "Nerve-wracking" , "filthy habit" .)
I believe the answer is:
nail biting
(Other definitions for nail biting that I've seen before include "anxious" , "tense" , "anxiety" , "Nerve-wracking" , "filthy habit" .)