from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. accustomed to, tolerant or accepting of.
- adv. Formerly, once, and habitually or repeatedly, but possibly no longer.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. in the habit
From used, past participle of use ("to perform habitually") + to (Wiktionary)
From used, past of use ("perform habitually") + to ("infinitive marker") (Wiktionary)