stepdame means A stepmother. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
noun
- A stepmother.“'To be sure, Maud; maybe you are right; a stepdame is a risk, and I ought to have asked you first what you thought of it; and upon my honour,' she continued merrily but kindly, observing that my eyes, I know not exactly from what feeling, filled with tears, 'I'll never again advise your papa to marry, unless you first tell me you wish it.'”