Corticosteroid rhymes with:
ackroyd, android, aykroyd, boothroyd, holroyd, oldroyd, spheroid, ackroyd, adenoid, alkaloid, amyloid, android, asteroid, aykroyd, boothroyd, celluloid, hemorrhoid, holroyd, mongoloid, nedlloyd, oldroyd, ovoid, paranoid, polaroid, rheumatoid, rhizoid, sinusoid, spheroid, unalloyed, vescinoid