Weekdays rhymes with:
workdays, birthdays, ceredase, faraday's, holiday's, holidays, holliday's, hyundai's, hyundais, newsday's, nowadays, sundae's, sunday's, sundays, traveldays, tuesdays, velagrande's, wednesdays, workdays, yesterday's, yesterdays
Weekdays sounds like:
waists, wasatch, washouts, waste's, wastes, wecht's, weights, west's, westdeutsche, westech, westtech, westtech's, westwood's, wichita's, wickets, wojtas, wojtaszek, wojtkiewicz, wojtkowski, wojtowicz