Having heard the phrase, faint heart never won fair lady for the third time in very short span, i'm determined to find out its origin.Unfortunately, when i google, i'm getting a bunch of low-qFor work-place specific gender-neutral politically-correct terms refer to the answer by @third-news.Otherwise, as elliot frisch has suggested, lady is the term you want.But in my opinion, if you're …Ladies is the plural form of lady, so the apostrophe goes to the right - ladies'.If you are wondering why we don't write ladies's, it is because ladies is one of the exceptions, along with girls', parents', …