best-comer

[Gość: lelum]

context: Being naturally timid, Sonia had known, long before this
incident, that her position exposed to her many a charge, and that
the first best-comer might insult her with impunity, in “Crime and
punishment” by F. Dostoyevsky, p. 320

[Gość: Steve]

It doesn't mean anything to me. I think its a direct translation from the
Russian and may have meant nothing to the translator. An alternative translation
misses it completely: "Sonia, timid by nature, had felt before that day that she
could be ill-treated more easily than anyone, and that she could be wronged with
impunity".