Mrs. Grant, really eager to get any change for her sister, could, by the easiest self-deceit, persuade herself that she was doing the kindest thing by Fanny, and giving her the most important opportunities of improvement in pressing her frequent calls.
There are no more uses of "deceit" in the book.
Show samples from other sources
I’ll never forget her deceit.
Nothing is easier than self-deceit. For what each man wishes, that he also believes to be true.