/ɪn'vetərət; ɪn`vɛtərət/
adj (derog 贬)
1 (of bad feelings, habits, etc) that have lasted a long time and seem likely to continue （指恶感、陋习等）根深蒂固的, 由来已久的
*inveterate hatred, prejudice, drunkenness,etc 根深蒂固的仇恨、由来已久的偏见、长醉不醒的状态.
2 (of people) habitually doing the specified bad thing; addicted （指人）有恶习的, 成瘾的
*an inveterate smoker, drinker, gambler, liar, etc 积习已久的烟鬼、酒徒、赌棍、撒谎家等.

adj [only before noun]written
[Date: 1300-1400; Language: Latin;Origin: , past participle of inveterare 'to get old', from vetus 'old']
inveterate liar/smoker/womanizer etc
someone who lies a lot, smokes a lot etc and cannot stop
inveterate fondness/distrust/hatred etc
an attitude or feeling that you have had for a long time and cannot change