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Related to inveteracy: cadaverously
1. Firmly and long established; deep-rooted: inveterate preferences.
2. Persisting in an ingrained habit; habitual: an inveterate liar. See Synonyms at chronic.
[Middle English, from Latin inveterātus, past participle of inveterārī, to grow old, endure : in-, causative pref.; see in-2 + vetus, veter-, old; see wet- in Indo-European roots.]
in·vet′er·a·cy (-ər-ə-sē), in·vet′er·ate·ness n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.