Lately some of their judgements had sounded a little childish in his ears and had made him feel a regret and pity as though he were slowly passing out of an accustomed world and were hearing its language for the last time.
There are no more uses of "accustomed" in the book.
Show samples from other sources
In the United States we’re accustomed to forming our own opinion about the promises of advertisements and politicians.
Actors and politicians are accustomed to less privacy than the rest of us.