To have become familiar or comfortable with something. This phrase is often used to describe aspects of one's daily routine. Now that she is no longer in school, Stella has become accustomed to staying up late and sleeping until noon.I never thought I would become accustomed to working in a warehouse, but now I almost enjoy it.
Used to something or someone; having the habit of doing something. For example, In Spain we gave up our usual schedule and became accustomed to eating dinner at 10 p.m. Professor Higgins in the musical My Fair Lady (1956) ruefully sang the song "I've Grown Accustomed to Her Face" after his protégé Eliza walked out on him. [Second half of 1400s]