Macfadyen rhymes with:
mcfadyen, mcfadyen, mcfadyen, mcfadyen, madyun, mcfadyen, accordion, akkadian, amerindian, andean, antemeridian, arcadian, burgundian, cambodian, canadian, ceridian, chadian, circadian, claudian, collodion, comedian, custodian, davidian, didion, edwardian, floridian, freudian, garabedian, gedeon, gideon, gordian, guardian, indian, madyun, mcfadyen, median, meridian, meridien, mooradian, mouradian, nalbandian, nickelodeon, obsidian, odeon, odiaun, pancanadian, providian
Macfadyen sounds like:
macfadden, mcfadden, mcfaddin, mcfadin, mcfadyen, mcfayden, mcspadden, mesopotamia, mesopotamian