I do not understand what Dickens meant by the use of this word, the last in the paragraph.
"Mrs Gowan's door was attended by a family servant of several years'
standing, who had his own crow to pluck with the public concerning
a situation in the Post-Office which he had been for some time
expecting, and to which he was not yet appointed. He perfectly
knew that the public could never have got him in, but he grimly
gratified himself with the idea that the public kept him out.
Under the influence of this injury (and perhaps of some little
straitness and irregularity in the matter of wages), he had grown
neglectful of his person and morose in mind; and now beholding in
Clennam one of the degraded body of his oppressors, received him
with ignominy.

I think it means something like 'with disdain' or 'with lack of respect'. Compare 'treat with ignominy'.

Bingley