Synonyms for Used to:

adj.

familiar with (adjective)
accustomed, knowing.

n.

habituated to, aware, conversant, clued up, knowledgeable, omniscient, USEV, in the habit of, awake to something, accustomed to, familiar with something, informed, au fait, comfortable with, knowing. can, could, should, might, may, Cannot, ought, shall, must. used to (noun)
accustomed, wont to.

Other synonyms:

should, accustomed to, Cannot, ought. must. shall. could, may. might. can. Other relevant words:
habituated to, accustomed to, conversant, knowing, comfortable with.