1) Accustomed 2) Addicted 3) Chronic 4) Constant 5) Constituted 6) Customary 7) Established 8) Inveterate 9) Obsessive 10) Recurring 11) Routine 12) Usual 13) Wonted 1) As a matter of routine 2) Chronic 3) Commonly practised 4) Commonly used or practiced 5) Constituted 6) Customary 7) Done as a routine 8) Established 9) French word used in English 10) Hopeless 11) Incurable 12) Inveterate 13) Irredeemable 14) Kind of liar 15) Persistent 16) Regular, what you always do 
• (n.) According to habit; established by habit; customary; constant; as, the habiual practice of sin. • (n.) Formed or acquired by habit or use.
of the nature of a habit; according to habit; established by or repeated by force of habit, customary.
Any behavior that occurs three or more times over the course of a bout.
[Adjective] When you keep doing something and cannot stop it. Or when you do something regularly.
<psychology> Of the nature of a habit, according to habit, established by or repeated by force of habit, customary. ... (18 Nov 1997) ... 
Ha·bit'u·al (hȧ*bĭt'u* a l; 135) adjective [ Confer French habituel , Late Latin habitualis . See Habit , noun ] 1. Formed or acquired by habit or use. « An habitual knowledge of certain rules and maxims.»...
[adj] - made a norm or custom or habit
adjective made a norm or custom or habit; `his habitual practice was to eat an early supper`; `her habitual neatness`