Although, by a seemingly careless arrangement of his heterogeneous garb, he had endeavoured to conceal or abate the peculiarity, it was sufficiently evident to Hester Prynne that one of this man’s shoulders rose higher than the other.
There are no more uses of "abate" in the book.
Show samples from other sources
The storm abated.
When he opened them again it was evening and some of the sharp pain had abated, there were many dull aches, and the crash came back to him fully.