How so? The word maid comes from the word maiden which isn't a bad word. And I don't think it was used as an insult, like ever. The bad connotation can only come from the things that this occupation involves which doesn't change with a new name as Volo pointed out. Funnily enough the term maid was coined because young girls from nobility and such often became maids for more powerful aristocracy members and it would be inapropriate to call them servants.