Cooperates rhymes with:
operates, aspirates, evaporates, incorporates, operates, recuperates, separates, accelerates, adulterates, aspirates, commemorates, corroborates, deliberates, deteriorates, elaborates, enumerates, evaporates, exaggerates, exonerates, generates, incarcerates, incorporates, obliterates, operates, perforates, proliferates, recuperates, reverberates, separates, tolerates, venerates
Cooperates sounds like:
cabarets, capriati's, chessboards, copperheads, cupboards, cypriots