chronic
Cross references:
1. inveterate
chron.ic \'kra:n-ik\ \-i-k*l\ \-k(*-)le-\ \kra:-'nis-*t-e-\ aj [F
chronique, fr. Gk chronikos of time, fr. chronos] 1a: marked by long
duration or frequent recurrence : not acute 1b: suffering from a chronic
disease 2a: always present or encounterd; esp : constantly vexing, weakeni
ng, or troubling {~ petty warfare} 2b: HABITUAL, ACCUSTOMED - chronic n
Webster's English Dictionary