English for Today by Ganiu Abisoye Bamgbose (Dr GAB)
PLURALISING COMPOUND NOUNS
I know some ~men-nurse~ (nonstandard).
I know some ~man-nurses~ (nonstandard).
I know some *men-nurses* (standard).
We heard the news from some ~passerbys~ (nonstandard).
We had the news from some *passersby* (standard).
They are responsible ~father-in-laws~ (nonstandard).
They are responsible *fathers-in-law* (standard).
He takes care of his ~steps-daughter~ (nonstandard).
He takes care of his *step-daughters* (standard).
GAB
No comment