Coauthors rhymes with:
arthur's, arthurs, author's, authors, authors', crowther's, crowthers, ethers, fathers', mothers', panther's, panthers, panthers', walthers
Coauthors sounds like:
cadres, casters, castro's, castrucci, caterers, caters, catharsis, cather's, cathers, catheters, cauterize, cauterizes, cedars, cedras, cedras', cedras's, cedric, chatterjee, cheaters, cheddars, chesters, chitra's, citric, citrosuco, citrus, citrus's, coasters, codrescu, codrescu's, costars, costa_rica, custer's, cutters