Adoptees rhymes with:
abductees, absentees, amputees, appointees, deportees, devotees, draftees, enlistees, expertise, guarantee's, guarantees, guaranties, guaranty's, inductees, invitees, maltese, ortiz, scortese, stees, t's, t.'s, t.s, teas, tease, tees, trustee's, trustees, trustees', tt's
Adoptees sounds like:
adaptec, adaptec's, adapts, adopts, at-bats