inveterate
in-VET-er-itadjMeaning having a habit so long-standing that it is unlikely to change
Memory hook in-VETER-ate: a VETERan of the habit. Professor Edwin has collected stamps every week for sixty years, a true veteran of the hobby: he is an inveterate collector.
My aunt is an inveterate traveler who has visited forty countries.
In context An inveterate joker, Uncle Omar could not get through even a serious family meeting without at least one pun.
Similar habitual, confirmed, chronic, hardened
Opposite occasional, casual
From Latin inveteratus, “grown old, long-established,” from vetus (old).