Here's what rhymes with signoid.
void annoyed choroid sigmoid glenoid toyed joyed cloyed avoid enjoyed solenoid arachnoid ethmoid sphenoid convoyed employed devoid steroid amyloid adenoid cuboid decoyed hemorrhoid haemorrhoid deployed paranoid rheumatoid overjoyed alkaloid asteroid carcinoid celluloid humanoid reemployed destroyed unemployed subarachnoid anthropoid mongoloid redeployed schadenfreude underemployed Words that almost rhyme with signoid
deutsche soit quoit droit avoit adroit introit maladroit noised moiled joined boiled coined coiled poised soiled foiled toiled roiled spoiled enjoined conjoined recoiled adjoined broiled uncoiled rejoined embroiled subjoined unspoiled purloined reconnoitred despoiled charbroiled