[attrib.]having a particular habit, activity, or interest that is long-established and unlikely to change 根深蒂固的,顽固不化的 he was an inveterate gambler. 他是个积习难改的赌徒。 ■(of a feeling or habit) long-established and unlikely to change (指情感或习惯)根深蒂固的,成癖的
派生 inveteracy noun inveterately adverb 语源
late Middle English (referring to disease, in the sense 'of long standing, chronic'): from Latin inveteratus 'made old', past participle of inveterare (based on vetus, veter- 'old')